Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 420862: Find the roots of the polynomial equation
x^3 + x^2 -17x +15 = 0
Click here to see answer by Alan3354(30993)

Question 420862: Find the roots of the polynomial equation
x^3 + x^2 -17x +15 = 0
Click here to see answer by Edwin McCravy(8909)

Question 421034: Solve the following system of linear equations by graphing. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
x+y=7
y=4
x = ?
y = ?
Click here to see answer by Alan3354(30993)

Question 421031: Solve the following system of linear equations by graphing. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
x+5y=2
y=x+4
x = ?
y = ?
Click here to see answer by Alan3354(30993)

Question 421033: Solve the following system of linear equations by graphing. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
x+y=7
x=-6

x = ?
y = ?
Click here to see answer by Alan3354(30993)

Question 421022: Solve the following system of linear equations by graphing. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
x+y=9
-x+y=1
x = ?
y = ?
Click here to see answer by Alan3354(30993)

Question 421021: Solve the following system of linear equations by graphing. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
x+y=7
x-y=-9
x = ?
y = ?
Click here to see answer by Alan3354(30993)

Question 421028: Solve the following system of linear equations by graphing. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
y=x+2
y=-x-6
x = ?
y = ?
Click here to see answer by Alan3354(30993)

Question 421027: Solve the following system of linear equations by graphing. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
3x+y=0
x-3y=0
x = ?
y = ?
Click here to see answer by Alan3354(30993)

Question 421026: Solve the following system of linear equations by graphing. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
18x-3y=3
6x+y=-1
x = ?
y = ?
Click here to see answer by Alan3354(30993)

Question 421025: Solve the following system of linear equations by graphing. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
6x-2y=8
x-y=1
x = ?
y = ?
Click here to see answer by Alan3354(30993)

Question 421074: The point (5,4) lies on the graph of a quadratic function whose zxis of symmetry is x=2. Find another point on the graph, without graphing.
Click here to see answer by robertb(4012)

Question 421118: Help me solve this please
w^4 -12w^2-2=0
Click here to see answer by stanbon(57361)

Question 421174: Solve the following system of linear equations by graphing. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
3x+y=0
x-3y=0
x = ?
y = ?
pls show me the steps
Click here to see answer by stanbon(57361)

Question 421178: Solve the following system of linear equations by graphing. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
x+y=7
y=4
x = ?
y = ?
pls show me the steps
Click here to see answer by stanbon(57361)

Question 421180: Solve the following system of linear equations by graphing. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
x=-4
y=8
x = ?
y = ?
pls show me the steps
Click here to see answer by MathLover1(6634)

Question 421228: find the vertex, the line of symmetry, the max or minimum value
of the quadratic function, and graph the function.
f(x) -2x^2 + 2x + 4
Click here to see answer by MathLover1(6634)

Question 421227: 3x^2 find the vertex and line of symmetry
Click here to see answer by rfer(12660)

Question 421231: Find the vertex, the line of symmetry, and the max or minimum value of f(x). Graph the function.
f(x) = -5(x+5)^2 + 4
Click here to see answer by rfer(12660)

Question 421216: a sprinkler that sprays water in a circular motion is to be used to water a square garden. If the area of the garden is 920 square feet, find the smallest whole number radius that the sprinkler can be adjusted to so that the entire garden is watered.
Click here to see answer by ankor@dixie-net.com(15653)

Question 421483: Solve. 6x^4-7x^2=0 I know I cannot factor and have to use the quadratic formula.
This is what I have but not 100% sure if I am doing my math correctly. Please Help!
-(-7)+√(-7)^2-4(6)(2)/2(6) = 7+√1/12 or 7-√1/12
Please let me know if these are correct or not! Thanks sooooo much!
Click here to see answer by Theo(3464)

Question 421527: Need help having trouble with my math on this one I know I cannot factor and have to use the quadratic formula to solve, I posted the problem wrong earlier.
6x^4-7x^2+2=0
This is what I have so far
-(-7)+√(-7)^2-4(6)(2)/2(6)
49+√1/12 or 49-√1/12
I am unsure if this is in its simplest form or even if my math is correct as I am having trouble checking it. Any help is greatly appreciated. Thanks!
Click here to see answer by sudhanshu_kmr(1152)

Question 421648: Solve the following system of linear equations by graphing. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
18x-3y=3
6x+y=-1
x = ?
y = ?
pls show me the steps to get the answer
Click here to see answer by the_tutor2011(8)

Question 421661: n2+5n+6= (n+3)

Click here to see answer by MathLover1(6634)

Question 421716: The figure below is a rectangle.Has an area of 27 square feet. Find the length and width of the figure. The length has the equation(x-3) and the width has the equation(x+3)=27 use the area formula. Area=Length x Width.
Click here to see answer by Adrish(44)

Question 421708: The sum of two consecutive integers is 19 less than their product. Find the integers. Can you please be detailed thank you.
Click here to see answer by Gogonati(809)

Question 421762: f(x)=-x^2+4x-2
graph,label thhe axis of symmetry and the vertex
Click here to see answer by rfer(12660)

Question 421787: If p and q are roots of quadratic equation x2-px+q=0 , what is value of p and q?
Click here to see answer by richard1234(5390)

Question 421817: Solve the following system of linear equations. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
6x-2y=7
x-y=2
x = ?
y = ?
pls show me the steps to get the answer
Click here to see answer by mananth(12270)

Question 421824: Solve the following system of linear equations by graphing. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
18x-3y=3
6x+y=-1
x = ?
y = ?
pls show me the steps to get the answer( not by graph)
Click here to see answer by mananth(12270)

Question 421852: can u please help me solve this question?
1.The straight line y=3-4x does not intersect the curve y=5x^2-x+q.Find the range of values of q.
Click here to see answer by Theo(3464)

Question 421936: Please help me answer thrse questions:
1.It is given that -2 is one of the roots of the quadratic equation h-8x-2x^2=0.Find the value of h.
2. The quadratic equation 8px^2+3=4p-4x,where p is a constant,has two equal roots.Find values of p.
3. px^2+2qx+4=0,where p and q are constant,has equal roots.express q in term of p.
thanx a lot 4 spending your time solving these questions.
Click here to see answer by shree840(260)

Question 421955: It is given that -2 is one of the roots of the quadratic equation
h - 8x - 2x² = 0. Find the value of h.

Click here to see answer by MathLover1(6634)

Question 421955: It is given that -2 is one of the roots of the quadratic equation
h - 8x - 2x² = 0. Find the value of h.

Click here to see answer by solver91311(16897)

Question 421955: It is given that -2 is one of the roots of the quadratic equation
h - 8x - 2x² = 0. Find the value of h.

Click here to see answer by Edwin McCravy(8909)

Question 421954: px^2+2qx+4=0,where p and q are constant,has equal roots.express q in term of p.
Click here to see answer by Gogonati(809)

Question 421995: how far has the airplane dropped from the first 600 feet to the airport at -100 feet..
please answer in 10 minutes
Click here to see answer by jim_thompson5910(28595)

Question 421993: 3x^2-1=0
how do factor this?

Click here to see answer by solver91311(16897)

Question 422007: what are factors of 24 that add up to 4?
Click here to see answer by MathLover1(6634)

Question 422166: I would like some help on this problem, please. "You are hanging a rectangular mirror in your room that has a diagonal 15 inches long. The width of the mirror is three inches shorter than it's length. What are the dimensions of the mirror?"
Click here to see answer by stanbon(57361)

Question 422305: 2^2x+3 -9(2^x)+1=0
Click here to see answer by jsmallt9(3296)

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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, 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