Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 290925: what happens when you quadratic formula look like this. x^2=-x+4
Click here to see answer by stanbon(75887)

Question 290950: Hi tutor please help me with this problem. Put the equation in the form ax2 + bx + c = 0. Use the caret (^) to enter exponents. For example, enter x2 as x^2

Question: x^2 + 8x + 10 = 3

(x*2)(x*2)=4x
4x+8x+10=3
-3 -3
4x+8x+7=0
Click here to see answer by ankor@dixie-net.com(22740)

Question 291017: How do you solve x^(2)+7=7? What is the vertex (x and y starting coordinates) of this equation?
Click here to see answer by jim_thompson5910(35256)

Question 291300: I have never had such a problem with maths before. Everyone says it's easy, and it might be easy, IF I ONLY GOT THE HANG OF IT. I've alwayas got around math problems before, but this time,it's quadric equations, and it seems impossible. I read my textbook over and over again, but just don't get it. It's like, my mind is blocked. My teachers keep saying the same old things again, and again, and I just don't understand it. I'd be delighted to get some help from here, because I don't want to ruin my straight-'A's on my report card with an ass shaped B, or worse, "C". I don't know what to do, or where to start from. I'm flunking. Please help!!!!
Aalia

Click here to see answer by checkley77(12844)

Question 291330: Tell weather the statement is always,never or sometimes true.
The function f(x)=ax�+c has three zeros
Click here to see answer by jim_thompson5910(35256)

Question 291330: Tell weather the statement is always,never or sometimes true.
The function f(x)=ax�+c has three zeros
Click here to see answer by killermen(2)

Question 291339: I need an exact solution and an approximate solution to 3 decimal points to equation x^-5x+5=0
Click here to see answer by richwmiller(17219)

Question 291342: a. SOLVE 3X^=6
b. solve x intercepts of x and y.
Click here to see answer by richwmiller(17219)

Question 291381: Find the vertex for the graph of the quadratic function
(x)= 5x squared - 38x + 21
Click here to see answer by stanbon(75887)

Question 291338: i need to solve this equation
Click here to see answer by lizette763(2)

Question 291563: Determine the k values such that y= 4x + k does not intersect the parbola y=-3x^2 -x +4
Click here to see answer by solver91311(24713)

Question 291601: Solve 3n2-6n+4=0 using completing the square method.

Click here to see answer by richwmiller(17219)

Question 291600: Solve 124x2 (x squared) = 36
Click here to see answer by College Student(505)

Question 291556: kindly help me with these equations...thank you....
(3 cos x + 7)(-2 sin x - 1) = 0 and
2 sin (x)cos (-x) = 2 sin (-x) sin (x)
Click here to see answer by richwmiller(17219)

Question 291677: Explain why the correct solution to the equation square root of x + 2 = x - 4 (which can be typed as sqrt(x + 2) = x � 4 ) is just 7. That is, explain what happens as you solve this equation and why you end up with the only solution x = 7.
Click here to see answer by richwmiller(17219)

Question 291678: Please help to answer the follwing question.
If the profit function for a commodity is p=6400x-18x^2-(1/3)x^3-40,000 dollars, selling how many units, x, will result in a maximum profit? Find the maximum profit.
(I am having troublw getting past this:
p'=6400-36x-x^2=0
Thanks!
Click here to see answer by stanbon(75887)

Question 291869: Hello,
I am trying to help a young man out with his home work.
Apparently it has been a while for me as well, so would you please help us with this math question?
Fresh milk cost $2.50 per liter. how much will (a) 20 liter, (b) d liter cost?
I need to figure out first what kind of math question this is and how to put it in the right written format. This way I should be able to research those type questions and be of better help to the next person I decide to help.
Thank you
Click here to see answer by checkley77(12844)

Question 291854: how do you solve the quadratic equation 2x^2=-(7x+3)

Click here to see answer by checkley77(12844)

Question 291853: how do you solve the quadratic equation 2x^2=-(7x+3)

Click here to see answer by checkley77(12844)

Question 291846: how do you do this problem.?
3x squared- 3=0
Click here to see answer by richwmiller(17219)

Question 291913: How do you compute the intercepts of a quadratic function?

Click here to see answer by richwmiller(17219)

Question 291921: Please help me solve the equation
b^4+13b^2+36=0
Find all real and imaginery solutions to this problem
Click here to see answer by richwmiller(17219)

Question 291921: Please help me solve the equation
b^4+13b^2+36=0
Find all real and imaginery solutions to this problem
Click here to see answer by stanbon(75887)

Question 291932: solve using the quadratic formula. round your answer to the nearest hundredth.

-----here's my try.------
step 1: x=-(-4)�√2^2-4(2)(-3)/2(2)
step 2: x=4�√4+24/4
step 3: x=4�√28/4
i don't know what to do past there. please help me, thank you.
Click here to see answer by richwmiller(17219)

Question 291947: Solve the equation.
4x^2-9x=9
Click here to see answer by helpnalgebra(91)

Question 291994: if A does a work in x hrs n b in x+6hrs then how much time will it require if both work together??
please give explanation of the solution
Click here to see answer by ankor@dixie-net.com(22740)

Question 291689: A ball is projected into the air. Its height at time t is given by the equation h = -16t^2 + 60x +1. When will the height be 8 feet?

Click here to see answer by Alan3354(69443)

Question 292241: The local radio station runs a contest to see whether the listeners can guess the makeup of a stack of $5 and $10 bills. There are 65 bills in the stack, and the stack is worth $365. How many of each type of bill is there?
Click here to see answer by richwmiller(17219)

Question 292323: i need help putting this into standard form.. 3(x-1)�=300
can you help?
Click here to see answer by ankor@dixie-net.com(22740)

Question 292383: Use the discriminant to determine the number and type of solutions for this equation x^2-3x+5=0
Click here to see answer by Deina(147)

Question 292443: If the roots of a quadratic equation are Real, equal and rational, then what is the value of b^2 -4ac?
(1) 0 (2) <0 (3) >0 (4) 4

Click here to see answer by richwmiller(17219)

Question 292470: If a triangle has a base of 2x+1 and a height of 6x-3. What value of X would give and Area of 240 m^2.
Please help me on how to put this into an equation and solve it.
Click here to see answer by nerdybill(7384)

Question 292496: solution of 4s^3+12s^2+12s+4=0
Click here to see answer by richwmiller(17219)

Question 292553: x^2-7x+6=o
find the solution set

Click here to see answer by Fombitz(32388)

Question 292352: How would I write a quadratic equation in standard form that passes through the points (-2,-2), (0,-6), (4,-2)?
Click here to see answer by ankor@dixie-net.com(22740)

Question 292499: How do you solve:
4h(3h + 2) = h + 12

Thank you!
Click here to see answer by jim_thompson5910(35256)

Question 292571: Please help me sove the equatation:
3x^2+2x-3=0 Please solve that for x

Click here to see answer by jim_thompson5910(35256)

Question 292613: The math problem says solve for 'X'
5x^2-3x=1
i had to subract from both sides
5x^2-3x-1=1-1
5x^2-3x-1=0
it says i have to apply the quadratic formula. Once i plugged my numbers in for -4AC it says its wrong.. how do i plugg them in ? so i can finnish solivng the rest of the equation.

Click here to see answer by richwmiller(17219)

Question 292577: how would you solve this?
9n(8n-7)= 0
Click here to see answer by Fombitz(32388)

Question 292545: After getting to the end of 2x(squared)-5x-8=0, I get 5 plus/minus the square root of 89 over 4. What happens next? I don't know what to do with it.
Click here to see answer by Fombitz(32388)

Question 292718: Hello my name is Taylor Anne and im a bit confused about how to solve and Quadratic Function. I have a math sheet to do that is titled Transformations: More Than Meets the Eye.
for the instructions it says
Give an example of a function that would fit the following transformations(s) of the quadratic parent function.
my current question that i do not fully understand is
8.The graph of a parabola that is vertically compressed.
see my predicament??? Anyway i would appreciate it if you could help me. Thank you tons in advance
ps: could you also include how to do this step by step and also a few bits of termenology that i need help comprehending like "vertically stretched"
and also whats the difference between domain and range and dependent and independent variables.
Click here to see answer by jim_thompson5910(35256)

Question 292735: Pablo wants to build a pen for the pig he is raising in his agriculture class. Pablo only has 36 feet of fencing. What dimensions can Pablo use to give the pen the maximum area? Organize your information into a 4-corner model.
then it asks for
Scatterplot/Graph:
Dimensions for maximum are and verbal description:
Domain and range:
Click here to see answer by richwmiller(17219)

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, 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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, 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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