Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 295606: √(z-28)=7 solve for z, where z is a real number, if more than 1 solution separate with a comma
Click here to see answer by user_dude2008(1861)

Question 295598: -6/((x+1)(x+6))=2+3/(x+6) solve for x , if there is more than 1 solution separate with a comma
Click here to see answer by mananth(12270)

Question 295631: Why is it sufficient to define a quadratic function, f(x) = ax2 + bx + c in terms of a, b, and c?
Click here to see answer by stanbon(57246)

Question 295560: help me understand quadratic equations in plain english PLEASE!!!!
Click here to see answer by richwmiller(9135)

Question 295637: Identify the vertex and the y-intercept of the graph of the function y=-3(x+2)^2 +5.
Click here to see answer by Fombitz(13828)

Question 295597: 〖-9〗^(6/y) Solve for y, simplify your answer as much as possible
Click here to see answer by Alan3354(30983)

Question 295682: If p not equal to q, p square = 5p-3 and q square = 5q-3, then find the equation having root p/q and q/p
a) x^2-19x+3=0
b) 3x^2-19x-3=0
c) 3x^2-19x+3=0
d) 3x^2+19x+3=0
Click here to see answer by richwmiller(9135)

Question 295699: what is the sum of the squares of the roots of the equation x^2 + 2x = 80?
Click here to see answer by nyc_function(2733)

Question 295679: 1/4x-3/8(3x-1/2)=-x-1/8
Click here to see answer by faceoff57(82)

Question 295717: x^2+4x+3=0, how do i solve this
Click here to see answer by jim_thompson5910(28504)

Question 295725: This is how I solved the problem. Where did I mis-calculate?

-3(-3)+- sq.rt(-3)^2-4`1`(-28) 3 +- sq.rt.729 3+9
______________________________ = x= ______________ = _____
2`1 2 2
x= 3-27 = -24 = -12 or x= 3+27 = 30 = 15
____ ___ ____ __ -12,15
2 2 2 2

Click here to see answer by jim_thompson5910(28504)

Question 295727: This is how I solved the problem. Where did I mis-calculate?

-3(-3)+- sq.rt(-3)^2-4`1`(-28) 3 +- sq.rt.729 3+9
x= 3-27 = -24 = -12 or x= 3+27 = 30 = 15
all divide by 2
Click here to see answer by solver91311(16868)

Question 295753: Find the vertex in g(x)=-x2 - 2x - 3
Click here to see answer by Fombitz(13828)

Question 295782: Factoring a quadratic with leading coefficient greater than 1
3y^2+7y-6
Click here to see answer by Fombitz(13828)

Question 295782: Factoring a quadratic with leading coefficient greater than 1
3y^2+7y-6
Click here to see answer by richwmiller(9135)

Question 295916: Can someone please help me solve the quadratic equation
7x^2-5=0
This is what I have tried, but I don't think I am on the right track so I didn't go any further.
x(7x+5)=0
x=0 7x+5=0
7x=-5
x=-5/7
Click here to see answer by bobdabuildr(27)

Question 295918: Find the roots of the quadratic equation w^2+3w+2=0
Click here to see answer by bobdabuildr(27)

Question 295915: Please help me solve the quadratic formula
9/8-2=5/x^2
Thank you for your time
Click here to see answer by bobdabuildr(27)

Question 295927: Solve (t+10)^2-36=0, where t is a real number. Simplify your answer as much as possible, if more than 1 solution separate with a comma
Click here to see answer by bobdabuildr(27)

Question 295931: Write the following in simplified radical form ∛250
Click here to see answer by nerdybill(6951)

Question 295922: Solve the equation for w
(w-3)^2=2w-9w+11 if more than 1 solution separate with a comma
Click here to see answer by mananth(12270)

Question 295930: ∛125 What ia the value of this
Click here to see answer by nerdybill(6951)

Question 295934: Simplify 4 5/2
Click here to see answer by Earlsdon(6287)

Question 295984: what makes a quadratic equation "quadratic?"
Click here to see answer by richwmiller(9135)

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(57246)

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(8882)

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(57246)

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(12647)

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(30983)

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

Simplify, assume that all variables represent real numbers

Click here to see answer by persian52(158)

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(12270)

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(3458)

Question 296230: Express the quadratic function in standard form,
Click here to see answer by richwmiller(9135)

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(9135)

Question 296223: Find the quadratic equation If r1+r2 = 0 , r1*r2 = 6
Click here to see answer by richwmiller(9135)

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(6287)

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(9135)

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(12569)

Question 296662: please graph f(x)=
Click here to see answer by richwmiller(9135)

Question 296652: The quadratic equation x^2 - 8x = -20 is to be solved by completing the square.
Click here to see answer by richwmiller(9135)

Question 296652: The quadratic equation x^2 - 8x = -20 is to be solved by completing the square.
Click here to see answer by checkley77(12569)

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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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