Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 427490: find the domain in interval notation of f(x)= square root x^2-16 over x^2+5x+4?
Click here to see answer by Gogonati(809)

Question 427487: find the following g[f(x)] if f(x)=3x-7 and g(x)=x^3-2x^2-x+1
Click here to see answer by Gogonati(809)

Question 427550: Solve each equation

(a) p^2-8p=0

(b) (x-3)(x+5)=-7 (c) (3x+2)(x-3)=7x-1

Click here to see answer by stanbon(57290)

Question 427565: 25x^3 = 64x
25x^3 - 64x = 0
Not sure what to do after I set right side to 0
Click here to see answer by John10(245)

Question 427565: 25x^3 = 64x
25x^3 - 64x = 0
Not sure what to do after I set right side to 0
Click here to see answer by richard1234(5390)

Question 427602: If x is real, the value of 3x^2 + 9x + 17 divided by 3x^2 + 9x + 7 is ?

Click here to see answer by Alan3354(30993)

Question 427714: What is the inverse of the function f(x)=6-x/2
Click here to see answer by Gogonati(809)

Question 427774: determine the nature of solutions for
x^2-2x+7=0
1real
2real
2nonreal
Click here to see answer by ewatrrr(10682)

Question 427835: x^2-3x=28
i need to find the AOS, Vertex, Y-intercept, and X-intercept. i also have to graph it and use the the X-box and Quadratic formula.
please help me and thank you very much!!!!
Click here to see answer by rfer(12655)

Question 427847: Find two integers whose sum is 12 and whose squares differ by 24.
Here's what I tried.
x + y = 12 , x^2 - y^2 = 24
x = -y + 12
(-y + 12)^2 - y^2 = 24
y^2 - 24y + 24 - y^2 = 24
-24y + 24 = 24
-24y = 0
y = 0
x + 0 = 12
x = 12
But then it won't match the other problem?
Click here to see answer by richard1234(5390)

Question 427828: Determine whether f(x)=x^2-3 has inverses?
Click here to see answer by richard1234(5390)

Question 427828: Determine whether f(x)=x^2-3 has inverses?
Click here to see answer by robertb(4012)

Question 427855: Find the area and perimeter of an 4 1/2-by-21-inch piece of paper.
Area ? square inches
Perimeter ? inches
Please write down the steps to get the answer. Thanks
Click here to see answer by richard1234(5390)

Question 427854: A woman has a balance of $35 in her checking account. If she writes a check for $50, what negative number can be used to represent the new balance in her checking account?
-$ ?
Pls write down the steps to get the answer. Thanks
Click here to see answer by rfer(12655)

Question 427833: What is the domain in interval notation of square root 2x+7?
Click here to see answer by nerdybill(6957)

Question 427861: What number results if 11 is subtracted from the product of -6 and 5?
Please show me the steps to get the answer. Thanks

Click here to see answer by Ro0oR(2)

Question 427860: Four added to the product of 3 and -11 is what number?
Please show me the steps to get the answer. Thanks
Click here to see answer by stanbon(57290)

Question 427860: Four added to the product of 3 and -11 is what number?
Please show me the steps to get the answer. Thanks
Click here to see answer by Alan3354(30993)

Question 427879: What happens when the quadratic equation is no solution? For example,
x2+6x+10=0
A=1 B=6 C=10
D= b2-4ac
D=62-4(10)=-4
-4<0 no real solutions
What now?
Thank you :)
Click here to see answer by MathLover1(6625)

Question 428168: Find the maximum value of the function: y=-x^2+8x-4
Click here to see answer by solver91311(16877)

Question 428168: Find the maximum value of the function: y=-x^2+8x-4
Click here to see answer by nerdybill(6957)

Question 428188: What is the y value of
y = x^2 - 4x
when the value of x is -1 negative 1
or the value of is ix 1 positive 1
are they the same? why or why not?
can you show how you solved it?
Thanks so much.
Click here to see answer by rfer(12655)

Question 428164: Determine the quadratic equation with integral coefficients having the roots: 3/2 and -1/2
Click here to see answer by ankor@dixie-net.com(15646)

Question 428245: What the graph of the function f(x)=2x+7 on the interval [-4,10] looks like?
Click here to see answer by vleith(2825)

Question 428247: What is the increasing interval of y=x^2-2x-3
Click here to see answer by Gogonati(809)

Question 428278: Solve each quadratic equation by completing the square.
1.X^2+4x+2=0
2.X^2+8x=1
3.X^2+2=6x+4
Click here to see answer by stanbon(57290)

Question 428278: Solve each quadratic equation by completing the square.
1.X^2+4x+2=0
2.X^2+8x=1
3.X^2+2=6x+4
Click here to see answer by nerdybill(6957)

Question 428388: Solve for x
64(x^2) = 25
Click here to see answer by rfer(12655)

Question 428673: 3y^2+5y=-2
Click here to see answer by Gogonati(809)

Question 428818: How do you find line of symmetry,y intercept, x-intercepts, maximim/minimum point from an quadratic equation to plot the parabola without using a graphing calculator and only using the equation?
Click here to see answer by ankor@dixie-net.com(15646)

Question 428970: My problem is;
Solve by factoring and using the principle o zero products
49k^2=36
Thank you very much
Click here to see answer by algebrahouse.com(1079)

Question 341980: I know that the fomula x= -b/2a is used to solve for the minimum/maximum value of a quadratic formula but what happens when the quadratic formula is a= -6 b=0(?) c= -1. I know that the maximum value= -1 but I dont understand how to solve for it. Please Help Me. Thanks in advance for your help and glorious time.
- Kay
Click here to see answer by robertb(4012)

Question 429003: The area of a rectangle is 80 meters. the length is one more than three times the width. Find the dimensions of the rectangle.
Click here to see answer by algebrahouse.com(1079)

Question 428848: How can I find the vertex while using the quadratic formula?
y= -5x^+25x+70
Click here to see answer by htmentor(789)

Question 429225: x^2-12x+36=0
Click here to see answer by ewatrrr(10682)

Question 429349: Create a polynomial that produces the solutions +-4i.
Click here to see answer by stanbon(57290)

Question 429682: what line of symmetry is this function y=|x+2|

Click here to see answer by stanbon(57290)

Question 429718: How do you solve the equation t^5 -256t = 0
Click here to see answer by Gogonati(809)

Question 429746: what is the answer of this equation 4(s-2)=0
Click here to see answer by stanbon(57290)

Question 429757: What is the answer to
I have tried this already and I came up with some crazy answer of x= -1.625 and x= -4.375.
Click here to see answer by stanbon(57290)

Question 429922: (x-1)(x+1)(x)=120

Click here to see answer by Alan3354(30993)

Question 429927: solve the following quadratic equation by factoring
x2-6x-16=0
Click here to see answer by jorel1380(2518)

Question 430055: One concert ticket costs $90. For each addl ticket sold to the group, the price of all tickets is reduced by $3. So 2 tickets costs 2x84 = $174, etc. Write a quadratic function that gives the total cost, C, of buying x tickets.
Click here to see answer by josmiceli(9668)

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