Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 257663: One less than certain positive number multiplied by three times this number less two is 14. Determine the number
Click here to see answer by richwmiller(17219)

Question 257742: How do I find a quadratic equation that has -6 and 4 as solutions in the form of ax^2+bx+c=0
Click here to see answer by ankor@dixie-net.com(22740)

Question 257769: x^2=6x-18 I am looking for the solution set
Click here to see answer by checkley77(12844)

Question 257769: x^2=6x-18 I am looking for the solution set
Click here to see answer by dabanfield(803)

Question 257719: At birth the probability that a female will survive to age 65 is approx.8/10 the probability that a male will survive to age 65 is 2/3 what is the probability that both the male and female will be alive at age 65.What is the probablilty that only the male will be alive at 65? Find the probabiltiy that only the female will be alive at 65 and find the probability that at least one of the two will be alive at 65? I just don't understand this at all please help homework due soon. Thanks Susan
Click here to see answer by edjones(8007)

Question 257868: Give exact and approximate solutions to three decimal places for x^2 + 6x + 9 = 1
Click here to see answer by richwmiller(17219)

Question 257849: I am taking the TEAS test again next month, thes two problems were on the previous test. I have tried my best to figure them out but I'm stuck!! I would really appreciate any help I could get.
1. x\y - z = r*w
and the answers were
a. x = (z + r*w)
b. x = z*y (r*w)
c. x = r*w + y*z
d. x = y + 1\2 (r*w*z)
2. 1\3:x=1:3
a. 1\9
b. 1
c. 3
d. 9
Click here to see answer by edjones(8007)

Question 257911: i need to find the solution set for x squared - 2x-13=0
Click here to see answer by richwmiller(17219)

Question 257911: i need to find the solution set for x squared - 2x-13=0
Click here to see answer by nerdybill(7384)

Question 257949: They give me this example:x squared -8x-20=0
(x-10)(x+2)=0
x-10=0 or x+2=0
x=10 or x=-2

I do not understand were they get -10 and +2. Why not 5 and 4. Also why is the 2 positive.
Click here to see answer by Greenfinch(383)

Question 257897: I have to put x^2-6x+2 back into two binomials like a foil problem.
Click here to see answer by checkley77(12844)

Question 257961: x^2-6x=0
I need the answer ,and how you got the answer.
Click here to see answer by richwmiller(17219)

Question 257978: x^2+5x+5=x+1
Can I have some clarification? Please and thank you
Click here to see answer by Edwin McCravy(20054)

Question 257983: how do u get the answer for x4+3+42x
Click here to see answer by richwmiller(17219)

Question 257977: What is the points of intersection of these equations
y=x+3
x^2+y^2+4x-8y+11
Click here to see answer by Edwin McCravy(20054)

Question 257973: They gave me this word problem;
I'm thinking of a number. The square of this number is the same as the number times 4. What could my number be?
I have to have a explination.
Click here to see answer by edjones(8007)

Question 258019: 3x^2-3x-8=2x^2+2
Click here to see answer by unlockmath(1688)

Question 258022: Please help me graph this equation by hand:
I have already found the roots but I do not understand how do any of the other stuff
Click here to see answer by richwmiller(17219)

Question 258001: y-9=0
x^2+y^2-24x-10y+153=0
Click here to see answer by Greenfinch(383)

Question 258000: What is the points of intersection of these equations
x-2y-8=0
x^2=y^2-12x+6y+29=0
Click here to see answer by Greenfinch(383)

Question 258000: What is the points of intersection of these equations
x-2y-8=0
x^2=y^2-12x+6y+29=0
Click here to see answer by Edwin McCravy(20054)

Question 258000: What is the points of intersection of these equations
x-2y-8=0
x^2=y^2-12x+6y+29=0
Click here to see answer by Alan3354(69443)

Question 258050: factor the following equation.
x^2 - x - 90 = 0.
Click here to see answer by drk(1908)

Question 258053: Determine the number of solutions of 2x^2 - 3x - 5 = 0
Click here to see answer by Greenfinch(383)

Question 258055: Please solve this equation by using the quadratic formula
x^2 - 5x + 9 = 0
Click here to see answer by richwmiller(17219)

Question 258096: how do i solve 4x^2+4x-15=0
Click here to see answer by Alan3354(69443)

Question 258096: how do i solve 4x^2+4x-15=0
Click here to see answer by scott8148(6628)

Question 258096: how do i solve 4x^2+4x-15=0
Click here to see answer by checkley77(12844)

Question 257975: x^2-7x=-12
Click here to see answer by checkley77(12844)

Question 258137: factor completely
36w^4-60w^3+16w^2
Click here to see answer by nerdybill(7384)

Question 258137: factor completely
36w^4-60w^3+16w^2
Click here to see answer by drk(1908)

Question 258137: factor completely
36w^4-60w^3+16w^2
Click here to see answer by checkley77(12844)

Question 258234: How do I solve this problem f(x) = -0.3x^2 + 25x + 16 using the quadratic formula and graphing...I'm lost. I know x = 1 if this helps.
Click here to see answer by richwmiller(17219)

Question 258187: 37. subtract.
x/x^2-9 - 3/x^2-9

A. x+3/x
B. 1/x-3
C. 3/x+3
D. 1/x+3
Click here to see answer by unlockmath(1688)

Question 258286: what is 6x^2 + 10x?
Click here to see answer by richwmiller(17219)

Question 258241: a 16 inch wire cut into two pieces bent into squares find the length if the sum of the areas is 10 in squared
Click here to see answer by Fombitz(32388)

Question 258241: a 16 inch wire cut into two pieces bent into squares find the length if the sum of the areas is 10 in squared
Click here to see answer by ankor@dixie-net.com(22740)

Question 258319: A parabola y = ax^2 + bx + c has vertex (4, 2). If (2, 0) is on the parabola, then find the value of abc
Click here to see answer by Fombitz(32388)

Question 258511: Solve the quadratic function by completing the square.
y=-x^2-7x-30
Click here to see answer by edjones(8007)

Question 258528: Please Help Me Solve This Quadratic Equation Application:
The Border of uniform width around a pool has outer dimensions of 26 feet by 66 feet. Find the width of the border if the pool has an area of 1200 square feet
Click here to see answer by checkley77(12844)

Question 258573: What is the answer to the problem? 8(10-8+18)/2=x

Click here to see answer by College Student(505)

Question 258645: The length of a rectangle is twice the width. The area is 98yd^2. Find the length and the width.
The length is ? yd.
(Simplify your answer)
The width is ? yd.
(Simplify your answer)
Thank you very much for your help with this problem.
Click here to see answer by stanbon(75887)

Question 258684: can you help me find the answer to 3( y − 2) − 5 = 2y +1;
Click here to see answer by unlockmath(1688)

Question 258755: Solve the formula for the given letter. Assume all variables represent non-negative numbers.
E=mc^2, for c

Thank you so much for your help.
Laura
Click here to see answer by Fombitz(32388)

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