Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 799755: Im having trouble on factoring. The problem is 20a^3+37a^2+8a. I pulled out an a as the greatest common factor and now have a(20a^2+37a+8). But now im stuck. is this where I do the product and some? I just don't know where to go from her.
Click here to see answer by rapaljer(4671)

Question 799809: Factor each expression:
B. 6(�^2-4�+4)^2+(�^2-4�+4)-1
C.(4j-2)^2-(2+4j)^2
Click here to see answer by DrBeeee(684)

Question 800118: Good day madam/sir.
can you please help me out on my assignment i need this tomorrow and probably i can't understand this. i have so many questions here but can you help me with this only? thank you.
Some of Aron's friends are planning to buy him a birthday gift worth 270 pesos, dividing the cost equally among themselves. six more of his friends decided to share in the expenses and so each one's share is decreased by 12 pesos. how many friends were originally part of the plan.
Click here to see answer by mananth(16946)

Question 800143: How do I find the value of an equation that is a perfect square trinomial?
Click here to see answer by mhel12jhane(6)

Question 800201: The product of a number decreased by 3 and increased by 5 is 9. Find all numbers satisfying this condition.
A. Write the polynomial equation described above.
B. Solve the equation and enter your solutions below.
**I understand B I just have no idea how to do A, I missed class the other day and I am trying to get caught up before the next class.
Click here to see answer by stanbon(75887)

Question 800297: How do you graph y=x squared -1 ?
Click here to see answer by Alan3354(69443)

Question 800361: A wooden frame surrounds a 5 inch by 7 inch photograph. The frame is the same width all the way around. How wide is the frame if it has an area of 32 square inches?
Click here to see answer by josmiceli(19441)

Question 800497: the largest of three consecutive numbers is n. the square of this number exceeds the sum of the other two numbers by 38. find the three numbers.

Click here to see answer by mananth(16946)

Question 800585: Solve the quadratic equation
1/5x^2-3x+5/4=0
(Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)
Click here to see answer by Alan3354(69443)

Question 800629: Solve the equation by using the square root property. Express the radical in simplest form: (x-9)^2=49
Click here to see answer by Alan3354(69443)

Question 800628: Solve the equation by using the square root property. Express the radical in simplest form: y^2-250=0
Click here to see answer by Alan3354(69443)

Question 800627: Solve the equation by using the square root property. Express the radical in simplest form: r^2+36=0
Click here to see answer by Alan3354(69443)

Question 800624: Solve the equation by using the square root property. Express the radical in simplest form: x^2=81
Click here to see answer by Alan3354(69443)

Question 800723: Hi, my word problem is
A population of crocodile is a game reserve after t years can be modelled by the equation 42t^2+36t+1008. after how may years will the population be equal to 1620? use the formula t= -5+-sqrt(b^2-4ac)/2.
I have done the problem to where I get 36+-sqrt(-168048)/84 and know I don't know how to complete this problem any further. my e-mail address is; dejagero@gmail.com
I will appreciate your help, I hae sleepless knight over this problem
Click here to see answer by KMST(5328)

Question 800819: How do I set up rules for height in feet as a function of time in seconds?
Click here to see answer by stanbon(75887)

Question 800849: A parabola has vertex (0,0) and focus on the y axis
a) find the equation of the parabola if it passes through the point (4,12)
Can you please help me out, thanks so much in advance:)
Click here to see answer by stanbon(75887)

Question 800858: State the coordinates of the focus and the equation of the directrix of the parabola defined defined by each equation
a) y^2 = 4x
b) x^2 = 8y
Can you please help me out, thanks so much in advance:)
Click here to see answer by lwsshak3(11628)

Question 800915: Find f(-1) for the function f(x)=4x+5.
Click here to see answer by waynest(281)

Question 800913: Give the domain and the range of the relation below.
{(2,1),(3,2),(4,3),(5,4)}
Click here to see answer by waynest(281)

Question 800910: Give the coordinates of the x-intercept(s)(if they exist) for the graph of the equation: y=^2+6x+9
Click here to see answer by waynest(281)

Question 800930: Solve the equation by completing the square: (k-1)(k+7)=9
Click here to see answer by mananth(16946)

Question 800931: Use the quadratic formula to solve the equation. Write the radical in simplified form, and the answer in lowest terms: 1/2p^2+2/3p-5/2=0
Click here to see answer by mananth(16946)

Question 800921: Solve the equation by completing the square: x^2+12x-85=0
Click here to see answer by josgarithmetic(39616)

Question 800929: Solve the equation by using the square root property. Express the radical in simplest form: (2x+9)^2-4=0
Click here to see answer by josgarithmetic(39616)

Question 800914: Tell whether the following relation is a function.
{(-3,2),(-2,2),(-1,2),(0,2)}
Click here to see answer by tommyt3rd(5050)

Question 800934: Solve the equation by using the square root property. Express the radical in simplest form: (3r-2)^2-28=0
Click here to see answer by mananth(16946)

Question 800906: Solve the equation by completing the square: y^2-6y=19
Click here to see answer by mananth(16946)

Question 800925: Solve the equation by completing the square: Solve the equation by completing the square: 4x^2-4x-9=0
Click here to see answer by rothauserc(4718)

Question 801049: Solve the equation by completing the square: (k-1)(k+7)=9
Click here to see answer by rothauserc(4718)

Question 801078: Solve the equation by using the square root property. Express the radical in simplest form: (m+12)^2=-9
Click here to see answer by rothauserc(4718)

Question 801038: Give the coordinates of the vertex for the graph of the equation: y=x^2+6x+9
Click here to see answer by tommyt3rd(5050)

Question 801192: You throw a ball to your friend. The ball leaves your hand 5 feet above the ground and has an initial vertical velocity of 50 feet per second. Your friend catches the ball when it falls to a height of 3 feet.
A.) Write a function that gives the ball's height (in feet) t seconds after you throw it.
i got: h(t)= -5t^2+50t
B.) How long is the ball in the air?
i set it equal to zero and got 10 seconds
C.) Describe 3 methods you could use to find the maximum height of the ball. Then use all three to find the max. height of the ball.
i only know of 1 way and that is -b/2a
if you could please help me with this it would be greatly appreciated. or if you had any advice it would also give much help. thank you
Click here to see answer by josmiceli(19441)

Question 801287: I've tried to factor, complete the square and eventually the quadratic formula. I cannot get any of the answers offered. . The available answers all contain imaginary numbers. (A) 1+i (B)1/2 plus or minus i (C) 2+3i (D) 1/2 plus or minus 1/2i
Click here to see answer by stanbon(75887)

Question 801032: Solve the equation by using the square root property. Express the radical in simplest form: r^2+36=0

Click here to see answer by harpazo(655)

Question 801034: Solve the equation by completing the square: Solve the equation by completing the square: 4x^2-4x-9=0

Click here to see answer by ankor@dixie-net.com(22740)

Question 800927: Give the coordinates of the vertex for the graph of the equation: y=-x^2+9
Click here to see answer by tommyt3rd(5050)

Question 800924: Solve the equation by using the square root property. Express the radical in simplest form: (m+12)^2=-9
Click here to see answer by tommyt3rd(5050)

Question 801929: Find the sum of the roots of the equation:
x^4-13x^2+36=0
Click here to see answer by solver91311(24713)

Question 802428: Please help me solve this equation:X ^2 - 3x + 4 = 0

Click here to see answer by solver91311(24713)

Question 802767: what is the solution of -5x>25?
Click here to see answer by edjones(8007)

Question 802905: 6y^2 - 24 = 0

Click here to see answer by mananth(16946)

Question 803002: Solve for x and leave your answers in simplest ''a+bi'' form
2x^2-4x+7=0
Click here to see answer by jim_thompson5910(35256)

Question 803095: what is the vertex of parabola y=x^2-6x+7?

Click here to see answer by Alan3354(69443)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240