Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 86037: Are the following trinomials perfect squares?
1. x^2-2x+1
2. x^2+4x-4
Find the constant term that should be added to make the following expression a perfect square trinomial.
x^2+8x
Find the constant term that should be added to make the following expression a perfect square trinomial.
x^2+3x
Click here to see answer by stanbon(75887)

Question 85963: List the terms & coefficients of the polynomial.
6x^4-8x^6-x^9-8
Click here to see answer by stanbon(75887)

Question 85964: write using positive exponents, and simplify if possible.
(-3x)-^2
Click here to see answer by stanbon(75887)

Question 86122: Find the axis of symmetry...
1. y=-x^2+4x+2
2. y=x^2+x+1
Find the x-intercepts...
1.y=x^2+2x-8
2. y=x^2-5x-10
Click here to see answer by jim_thompson5910(35256)

Question 86121: Solve by completing the square...
1.x^2+4x+3=0
2.x^2=5x+2
3.2x^2-8x-9=0
4.4x^2+2x-3=0
Thanks in advance for all of your help!!!
Click here to see answer by Earlsdon(6294)

Question 86180: Suppose you travel north for 65 kilometers then travel east 75 kilometers. How far are you from your stating point?
Click here to see answer by psbhowmick(878)

Question 86180: Suppose you travel north for 65 kilometers then travel east 75 kilometers. How far are you from your stating point?
Click here to see answer by ptaylor(2198)

Question 86186: for the function y= 1/x-2 give the values y for x = -1,0,1,2,3,4
please show work to help me understand this problem
using these points draw a curve
Click here to see answer by stanbon(75887)

Question 86185: Need some serious help here.
for the function y= 1/x-2 give the values for x = -1,0,1,2,3,4
Must show work
use these points to draw a curve
Click here to see answer by Earlsdon(6294)

Question 86179: x-[3x-2(9-x)-x} < x-(5-x)

Click here to see answer by scianci(186)

Question 86202: p-(3p-1)+12>-2(p+4)-12
Click here to see answer by ptaylor(2198)

Question 86215: x-[3x-2(9-x)-x}
Click here to see answer by stanbon(75887)

Question 86214: 0.03c-0.1 = 1.4c+9
Click here to see answer by stanbon(75887)

Question 86226: 8-[3-2(9-7)-12]-11=
Click here to see answer by sofiyacherni(99)

Question 86213: 4-3(2b+4) = 6-2(3b-1)
Click here to see answer by checkley75(3666)

Question 86205: 0.03c-0.1 = 1.4c+9
Click here to see answer by checkley75(3666)

Question 86256: 8-[3-2(9-7)-12]-11=
simplify by using order of operations, I am confused any help I will deeply appriciate
Click here to see answer by dolly(163)

Question 86210: For the equation x - 2 square root x = 0 , perform the following:
a) Solve for all values of x that satisfies the equation.
Answer:
Show work
b) Graph the functions y = x and y = 2 square root X, on the same graph (by plotting points if necessary). Show the points of intersection of these two graphs.
Graph:
Thanks in advance for any help. I can't figure this one out at all.

Click here to see answer by dolly(163)

Question 86274: The height h in feet of an object after t seconds is given by the function h=-16t^2+60t+9....
How long will it take the object to hit the ground? Round your answer to the nearest thousandth....
Click here to see answer by stanbon(75887)

Question 86273: Find the axis of symmetry...
1. y=-x^2+4x+2
Find the x-intercepts...
1. y=x^2+2x-8
The length of a rectangle is 3cm more than 2 times its width. If the area of the rectangle is 99cm^2, find the dimensions of the rectangle to the nearest thousandth.
Click here to see answer by stanbon(75887)

Question 86271: Solve by using the quadratic formula...
1. x^2-x-2=0
2. x^2=3x+12
3. 4x^2-3x+3=0
4. 5x^2-7x=1
5. 3x^2=11x+4

Click here to see answer by scianci(186)

Question 86270: Thanks in advance for all of your help!!
Solve by completing the square...
1. +4x+3=0
2. =5x+2
3. 2-8x-9=0
4. 4+2x-3=0
Click here to see answer by scianci(186)

Question 86269: Please Help!!!
Solve...
1. -9(x-3)^2=-7
2. (x+4^2=3
3. 5(x-2)^2=3
Thanks In advance!!!
Click here to see answer by scianci(186)

Question 86343: evaluate if x=3 y=-6 and z= 1/2
8z-y+12x
Any help will be appriciated
Click here to see answer by checkley75(3666)

Question 86360: p-(3p-1) + 12> -2 (p+4) -12
Please help a dummy
p-3p+1+12>-2p-8-12
-2p+13>-2p-20
13>-20 is the solution

Click here to see answer by praseenakos@yahoo.com(507)

Question 86361: Evaluate if a=-3 b= 3/4 c=-1/2
c-a / b-c
Divided = / -1/2-(-3)=c-a
3/4-(-1/2)=b-c
-1/2+3=5/2
3/4+1/2=5/4
5/2/5/4 = 5/2.4/5
= 2
Click here to see answer by chitra(359)

Question 86361: Evaluate if a=-3 b= 3/4 c=-1/2
c-a / b-c
Divided = / -1/2-(-3)=c-a
3/4-(-1/2)=b-c
-1/2+3=5/2
3/4+1/2=5/4
5/2/5/4 = 5/2.4/5
= 2
Click here to see answer by praseenakos@yahoo.com(507)

Question 86359: 2+3[4+2(b-1)] > 2b-7
Click here to see answer by praseenakos@yahoo.com(507)

Question 86359: 2+3[4+2(b-1)] > 2b-7
Click here to see answer by jayanthihemkos@yahoo.com(87)

Question 86359: 2+3[4+2(b-1)] > 2b-7
Click here to see answer by chitra(359)

Question 86250: 0.03c-0.1 = 1.4c+9
0.03c-1.4c=9+0.1
-1.37c=9.1
c=9.1/-1.37 c=-9.1/1.37
Click here to see answer by praseenakos@yahoo.com(507)

Question 86373: x-[3x-2(9-x)]-1< x-(5-x)
Please help me I am mathematically challenged!!
Click here to see answer by Edwin McCravy(20054)

Question 86414: Please help! I am stuck on this quadratic equation!
The original equation reads like this: 2x^2+10x+11=0.
Thank you! Your help is greatly appreciated!
Click here to see answer by checkley75(3666)

Question 86375: 3x-4(2x-3) > 5-(4-7x)
Click here to see answer by tutorcecilia(2152)

Question 86430: I have to solve this equation by completing the square, and I'm a bit stumped. Any help would be greatly appreciated!
2x^2+10x+11=0
Thank you!

Click here to see answer by jim_thompson5910(35256)

Question 86441: Hello,
I am unsure if I have the correct answer for this problem
solve by the quadratic formula
6x^2=x+2
my answer {49/12}
Thank you for your help

Click here to see answer by scianci(186)

Question 86502: Solve...
1. 9x^2=14
2. x^2+8=17
Click here to see answer by tutorcecilia(2152)

Question 86497: Can you help me with this? It is so confusing on how to get the answer. Thank you.
x^2 - 3x = -6 - 1
Click here to see answer by checkley75(3666)

Question 86496: Can you help me break this down and solve? Thank you so much.
x^2 - 3x = -6x - 1
Click here to see answer by checkley75(3666)

Question 86539: Can you help me double check this using the quad formula?:
x^2 - 10 - 1 = -10
Click here to see answer by praseenakos@yahoo.com(507)

Question 86631: can you help with this quadratic equation
4x2 - 16 = 0
Click here to see answer by dolly(163)

Question 86632: x2 + 5x - 6 = 0

Click here to see answer by dolly(163)

Question 86671: saquare root of 144 + 3[8+7)2-3)]= I can't seem to get the right answer which is 15
Click here to see answer by tutorcecilia(2152)

Question 86672: square root of 144 + 3[8+7(2-3)]= I can't seem to get the right answer which is 15
Click here to see answer by bucky(2189)

Question 86408: Solve by using the quadratic formula...
1. 2x^2-7x=5
Solve...
1. x^2+10x+16=0
The demand and supply equations for a certain item are given by D=-5p+40/S=-p^2+30p-8..Find the equilibirum price...
Find the axis of symmetry...
1. y=x^2-7x+2

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, 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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