Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 607269: x^3+16x^2
Click here to see answer by sophxmai(62)

Question 607290: For the following equation, state the value of the discriminant and then describe the nature of the solutions.
-6x^2-9x+8=0
Click here to see answer by lynnlo(4176)

Question 606895: solve for x: 10 + 2
--- ---- =4
x+2 x+2
Click here to see answer by Nihal@SriLanka(22)

Question 607395: i need help simplifying this equation.. i always get a different answer. here's the problem: (-6 + 3i)^2
Click here to see answer by Alan3354(69443)

Question 607396: i need help with this one also
f(x) = (x+2)^2-3

also, need to know how to graph the function and find the vertex.
Click here to see answer by Edwin McCravy(20054)

Question 607488: How would i solve t^2 = 144 and graphing it.
Click here to see answer by asuar010(338)

Question 606890: 3x^2+19x=154
Click here to see answer by asuar010(338)

Question 607536: Hi,
I want to know if this is correct please.
x^2+20=8x
I have to type the answer in a+bi form, which I am not sure if this is right or I have to put the * sign before the i.
x= 8+4i/2, 8-4i/2
Thanks,

Click here to see answer by alicealc(293)

Question 607530: Hi,
Can someone help me please? I am completely lost.
8x+x(x-2)=0
I need the solutions of x
and the x intercepts of f(x)=8x+x(x-2)
Thanks so much
Click here to see answer by alicealc(293)

Question 607525: Please help.me .solve this equation . x� +12x - 64 =0
Click here to see answer by alicealc(293)

Question 607524: Please help.me .solve this equation . x� -2x -13 = 0
Click here to see answer by alicealc(293)

Question 607650: Hello,
I need to write a quadratic equation having the given numbers as solutions
-3,-1.
Thanks
Click here to see answer by Alan3354(69443)

Question 607617: How do you solve 5x squared plus 16x minus 84 equals 0 using the quadratic equation
How do you solve 4x squared minus 12x plus 9 equals 0 using the quadratic equation
Click here to see answer by KMST(5328)

Question 607754: Write a quadratic equation that has the following solutions.
a. 1 and -2
b. 0 and 3
Click here to see answer by jim_thompson5910(35256)

Question 607449: A jogger ran 9 miles in an hour. For the last 4 miles he jogged 2 mph slower than he did for the first 5 miles. How fast did he jog for the first 5 miles?
Click here to see answer by ankor@dixie-net.com(22740)

Question 607913: solve 3x^2=6
find the x intercepts for f(x)3x^2-6
Click here to see answer by lynnlo(4176)

Question 607971: Solve the following equation by completing the square. 7x^2-5x+2=0
Click here to see answer by lynnlo(4176)

Question 608095: The demensions of a certain computer monitor are such that it's length is thre inches more than it's width. If The length is incresed by one while the width stays the same, the area is increased by 13 square inches. What is the lenght and width?
also can you show me how to set this problem up to solve?
Click here to see answer by ewatrrr(24785)

Question 608104: Express using positive exponents. Then, if possible, simplify.
(−3)−4
Not sure if it written correctly. (-3)^-4.
Click here to see answer by jim_thompson5910(35256)

Question 608106: Simplify. Assume that no denominator is 0 and that 00 is not considered.
(5a)2. Might be also written as (5a)^2. Not sure which way to write it.

Click here to see answer by jim_thompson5910(35256)

Question 608152: an arrow is fired into the air with an initial velocity of 160 feet per second. The height in feet of the arrow t seconds after it was shot into the air is given by the function h(t)= -16t^2+160t. find the maximum height of the arrow.
Click here to see answer by Alan3354(69443)

Question 608165: The length and width of a rectangle must have a sum of 116 feet. find the dimensions of the rectangle whose area is as large as possible. answer should include length in feet and width in feet.
Click here to see answer by solver91311(24713)

Question 607972: Use the set builder notation to describe each of the sets below:
(i) { G, D , I , O , R , E , S , T , A }
(ii) { -7 , -5 , -3 ,-1, 1 , 3 , 5 }

Click here to see answer by richard1234(7193)

Question 608293: Graph the solution to the set y ≤ 3x^2 + 2x + 5
Click here to see answer by stanbon(75887)

Question 608352: Complete the square and write the equation in standard form.Then give the center and radius of the circle. x^2+y^2+18x+8y=-93
Click here to see answer by solver91311(24713)

Question 608399: Would someone please help me with this equation??!!!!?!?!!!
Find the vertex, the line of symmetry, the maximum or minimum value of the quatratic function and graph the function.
f(x) = -2x^2 + 2x + 6
The question asks for:
x-coordinate
y-coordinate
The equation line of symmetry
The minimum or maximum value of the quadratic function
and whether or not the value of f(1/2) = 13/2 is a minimum or maximum
also, the graph
Click here to see answer by lwsshak3(11628)

Question 608486: (x+2)^2+144
Click here to see answer by lynnlo(4176)

Question 608521: find the vertex of the following:
y=(x-5)^2
y=(x+3)^2
y=(x-1)^2
y=x^2+8
y=x^2-5
y=x^2+2
Click here to see answer by ewatrrr(24785)

Question 608555: Solve the following quadratic equation by using the square root property.
2(x-1) squared =72
Click here to see answer by ewatrrr(24785)

Question 608566: Would someone please help me. I forgot how to do this kind of problem.
Use the foil method to find the product
(6x^2 - 4)(x^6 - 5)
Click here to see answer by stanbon(75887)

Question 608563: Use the quadratic formula to solve the equation. I forgot how to do this. Can someone please help me
x^2 - x = -1
Click here to see answer by stanbon(75887)

Question 609030: Use the technique of completing the square to transform the quadratic equation below into the form (x + c)2 = a.
4x2 + 16x + 12 = 0
Click here to see answer by flame8855(424)

Question 609090: x^2 + 5x + 6 =0
Click here to see answer by jim_thompson5910(35256)

Question 609128: Help please!
Instructions: Use the quadratic formula to solve the equation
2x^2-x=-7
My answer is 1+i√55/4, 1-i√55/4.
Is this in the correct form or it should be 1+√55/4, 1-√55/4 and on the side the i?
Thanks
Click here to see answer by ewatrrr(24785)

Question 609126: how we make quadratic equation?

Click here to see answer by Edwin McCravy(20054)

Question 609126: how we make quadratic equation?

Click here to see answer by unlockmath(1688)

Question 609154: Y=2x(squared)-8x-1
i wanna know the a vaule b vaule and c vaule i also wanna know if it opens up or down? the axis of symmetry the vertex the domain and the range
Click here to see answer by ewatrrr(24785)

Question 609107: Using the discriminant, find the number of x-intercepts for the equation y=-3x^2-6x+12
Click here to see answer by nerdybill(7384)

Question 609161: hello i am an eight grader and i am having a hard time with quadratic equations they don't make a lot of sense to me and i am having a very stressful time can some one please help me understand?
Click here to see answer by Edwin McCravy(20054)

Question 609180: The solution of a quadratic equation can be found by graphing each side separately and locating the points of intersection
Solve: 3x^2 + 2x + 5 = 6x^2
How would I do this on the calculator?
Click here to see answer by solver91311(24713)

Question 609152: lauren dove into a swimming pool from a 15-foot-high diving board with an intitial upward velocity of 8 feet per second.the equation h(s)= -16s(square root)+8s+15 models the height (H) after (S) after she jumps off the diving board.
i wanna know how to find the time in seconds,it took lauren to enter the water.
also i wanna know what was the greatest height lauren reached when diving?

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

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