Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 295984: what makes a quadratic equation "quadratic?"
Click here to see answer by richwmiller(17219)

Question 296005: When factoring, what should you check first?
A. Look for a greatest common factor.
B. Decide what signs go inside the quantities.
C. Look for a difference of squares.
D. Each problem is different.
Thanks
Click here to see answer by stanbon(75887)

Question 296004: What is the first step in solving a quadratic equation?
A. Factor.
B. Get zero on one side of the equal sign.
C. Set the factors equal to zero.
D. Each problem is solved differently.
Thanks
Click here to see answer by Edwin McCravy(20054)

Question 296022: I need help with finding any x-intercepts and the y-intercepts. If no x-intercepts exist, state this.
g(x)=2x^2+3x-1
This is what I have so far
let y=2x^2+3x-1
for y-intercept, let x=0
for x-intercept lrt y=0
2x^2+3x-1=0
x=(-3+sqrt17)/4
Click here to see answer by adewberry(1)

Question 296087: I can't remember how to do this...
Solve. 15x^4-14x^2+3=0
Click here to see answer by stanbon(75887)

Question 296086: Help!!
Divide. (35b^3+18b^2+27b+32)divided by (5b+4)
The answer I got is 7b^3+9b^2-2b+7 R4. Am I right? :\
Click here to see answer by 21900168(1)

Question 296132: 5/8=v/7 Solve the following proportion for v, round your answer to the nearest tenth
Click here to see answer by rfer(16322)

Question 295967: 7y-4/5y = 9/5-4/y

The equation is 7y-4 divided by 5y = 9divided by 5 - 4 divided by y. I hope this makes sense I know that y does not equal 0. Is the LCD 5 or 5y. Please have me solve this equation.
thanks for your help
Click here to see answer by scott8148(6628)

Question 296089: One more I think I did wrong...
Factor completely. 175a^2+490ap+343p^2
I got (7+1)(5a+7p) but I don't think it is right...
Click here to see answer by Alan3354(69443)

Question 296131: √(5x^3t^3 ) √(10xt^3 )

Simplify, assume that all variables represent real numbers

Click here to see answer by persian52(161)

Question 296091: I'm confused as to what formula I would use for this word problem:
If the sides of a square are lengthened by 6cm, the area becomes 144cm^2. Find the length of the original square.
Click here to see answer by mananth(16946)

Question 296203: I need help translating the problem situation to a system of equations.
Sarah Comar's Candy Store sold a total of 53 pounds of jelly beans, selling two kinds of jelly beans. The first kind was priced at $4.45 pound, and the second kind was priced at $1.12 per pound. In all, $125.96 was taken in for the two types of jelly beans. How many pounds of each kind were sold? (Let x represent the number of pounds of the first kind and y represent the number of pounds of the second.
Click here to see answer by Theo(13342)

Question 296230: Express the quadratic function in standard form,
Click here to see answer by richwmiller(17219)

Question 296229: Express the quadratic function in standard form, find its vertex and its x- and y- intercepts and sketch its graph.
Click here to see answer by richwmiller(17219)

Question 296223: Find the quadratic equation If r1+r2 = 0 , r1*r2 = 6
Click here to see answer by richwmiller(17219)

Question 296244: A rectangular piece of cardboard has a total length that measures 6 inches more than its total width. A 2-inch by 2-inch square is cut out of each corner, and the remaining sides are turned up at the dotted lines and their edges taped together to make a box with no top. The volume of the box is 110 cubic inches. What were the dimensions of the original piece of cardboard?
Click here to see answer by Earlsdon(6294)

Question 296290: The height of a ball thrown straight upward is measured by the function h(t)=-16t^2+40t. When is the ball at a height of 48 ft?
Click here to see answer by richwmiller(17219)

Question 296386: Write a quadratic equation in the variable x having the given numbers
-7,3
The equation is _________________=0
Click here to see answer by checkley77(12844)

Question 296662: please graph f(x)=
Click here to see answer by richwmiller(17219)

Question 296652: The quadratic equation x^2 - 8x = -20 is to be solved by completing the square.
Click here to see answer by richwmiller(17219)

Question 296652: The quadratic equation x^2 - 8x = -20 is to be solved by completing the square.
Click here to see answer by checkley77(12844)

Question 296675: Write a quadratic equation having solutions of square root of 11 and negative square root of 11?
Click here to see answer by Alan3354(69443)

Question 296674: 4x^-121
Click here to see answer by Alan3354(69443)

Question 296668: On a 135-mile bicycle trip, John averaged 5 miles per hour faster for the first 60 miles than he did for the last 75 miles. The entire trip took eight hours. Find his rate for the first 60 miles.
Click here to see answer by richwmiller(17219)

Question 296677: 6x^+11x-10

Click here to see answer by richwmiller(17219)

Question 296679: solve each quadratic equation by factoring
2x^-35x-
Click here to see answer by richwmiller(17219)

Question 296664: how to you graph x^2-?
Click here to see answer by richwmiller(17219)

Question 296627: Explain the differences between the graph of a quadratic equation with one solution as opposed to the graph of a quadratic equation with two solutions.
Click here to see answer by jim_thompson5910(35256)

Question 296744: 4x^2+16x+15=0
Solve for x
Click here to see answer by jim_thompson5910(35256)

Question 296775: which of the following is the greatest common factor of the terms 48s^5t^3u^ and 40s^3tu^4?
Click here to see answer by stanbon(75887)

Question 296771: Problem: Determine whether f(x)=3x^4-5x^2+2 is even, odd, or neither.
.
.
I automatically want to say "neither" because of that 3x to the fourth power, but I tried plugging "-x" in the equation in place of "x" just to test it.
f(-x)=3(-x)^4-5(-x)^2+2.
.
My problem is, I don't understand what I'm looking at or why. Should I plug a real number in to test it or what? Any explanation is helpful (especially if I'm doing this wrong!!!) Thanks :)
Click here to see answer by jim_thompson5910(35256)

Question 296803: what is the equation xsquared-25=0 solved by the quadratic formula
Click here to see answer by JBarnum(2146)

Question 296805: w^2=-2
Click here to see answer by jim_thompson5910(35256)

Question 296809: 3X^2+2X-4=0
Click here to see answer by jim_thompson5910(35256)

Question 296777: Please help me solve this Quadradic Equation by factoring
3m^=20-7m
Click here to see answer by richwmiller(17219)

Question 296777: Please help me solve this Quadradic Equation by factoring
3m^=20-7m
Click here to see answer by blwinbbbles(106)

Question 296776: Please help me solve this Quadradic Equation by factoring
x+5)^=2
Click here to see answer by richwmiller(17219)

Question 296842: x^2+x+square root x^2+x-2=0
Click here to see answer by JBarnum(2146)

Question 296873: How do you solve 121x^2-49=0
Click here to see answer by richwmiller(17219)

Question 296873: How do you solve 121x^2-49=0
Click here to see answer by stanbon(75887)

Question 296873: How do you solve 121x^2-49=0
Click here to see answer by JBarnum(2146)

Question 296879: The height of a curved support beam can be modeled by f(x)=(-x^2)/300+12. Find the height and width of the beam.

Click here to see answer by stanbon(75887)

Question 296918: a solution of x/4^2=9
Click here to see answer by dabanfield(803)

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