Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 103083: Good Evening Tutor,
I am having a hard time with this problem and was hoping to get a bit of explanation to help me out.
Solve the following quadratic equation by factoring or any other technique acceptable.
x^2 - 9x - 4 = 6
Any help on this problem is appreciated. Thank you for your help.
Click here to see answer by oberobic(2304)

Question 103105: Can you please help with this one?
(16 - x2)/
(x3 - 2x2 - 8x)
So far I have:
(4-x)(4+x) over
x(x+2)(x-4)
Do this look right and is it as far as I can go?
Click here to see answer by edjones(8007)

Question 102942: x^2 - x/ x^2 + 3x + 2 / x^2-1/x^2+2X
Click here to see answer by ankor@dixie-net.com(22740)

Question 103175: x^2-4x+12=0
Click here to see answer by Fombitz(32388)

Question 103202: How do you solve

Click here to see answer by edjones(8007)

Question 103202: How do you solve

Click here to see answer by checkley75(3666)

Question 103201: How do you solve

Click here to see answer by Math Wizard(1)

Question 103252: I was hoping that you could help me solve this quadratic problem using the quadratic formula.
2x^2 - 5x = 3
Any help on this problem would be helpful to me as I am not understanding these problems very well. Thank you in advance for your help.
Click here to see answer by stanbon(75887)

Question 103336: Hello Tutors, I need some serious help here, as This quadriatic form stuff is confusing me to no end. Can someone please help me with this problem?
Write the equation in quadratic form and solve it by factoring.
x^2 + 8(x + 2) = 0
Thank You Tutors for your help. I Greatly Appreciate it!
Click here to see answer by JP(22)

Question 103349: Can someone offer some help?
12-x-x^2 / 5x^2+30x+40
Click here to see answer by HyperBrain(694)

Question 103354: I have a word problem. If you deposit money today into an account that pays 6.5 percent interest, how long will it take for you to double your money?
Please help me with the word problem.
thanks
Click here to see answer by HyperBrain(694)

Question 103350: I'm really stuck on this one and need help.
15x^2+10x / 2x^2-13x +20 times 2x^2-3x-5 / 30x^3 + 20x^2
Thanks.
Click here to see answer by elima(1433)

Question 103417: I have these two quadratic equations that I have to solve.

and

I know how to factor and I'm aware of the zero product property...but I'm not sure that regular factoring is the right way to solve this problem. Can you help me out, please?
Click here to see answer by stanbon(75887)

Question 103489: Can someone offer some assistance to a 49 year old algebra student?
([2a^2b]/[3x^2y])^3 times ([-6xy^2]/[a^3b])^2
Click here to see answer by stanbon(75887)

Question 103555: 0.478
using scientific notation
Click here to see answer by stanbon(75887)

Question 103518: Please help me with this problem.
Your parents are planning to retire in 18 years. They currently have $250,,000, and they would like to have $1,000,000 when they retire. What annual rate of interest would they have to earn on their $250,000 in order to reach their goal, assuming they save no more money?
Someone please help me out, I am confused on this question.
Thanks
Steve
Click here to see answer by stanbon(75887)

Question 103571: Can someone please help me with this one.
Evaluate. 3^�5
A) �15
B) �243
C) 1/243
D) -1/243

Click here to see answer by edjones(8007)

Question 103569: I dont even know where to start
Find the value of the polynomial x3 � 4x when x = �2.
A) �2
B) 0
C) 2
D) 14

Click here to see answer by edjones(8007)

Question 103567: I dont understand this one!!!
Give the degree. 6x
A) 0
B) 1
C) 6

Click here to see answer by edjones(8007)

Question 103565: I need help with this one
(m^4)^3(m^2)^9 over,
(m^3)^2

A) m^5
B) m^3
C) m^24
D) m^13

Click here to see answer by edjones(8007)

Question 103581: Please help me solve this equation. �9(x � 3)^2 = �7
Click here to see answer by edjones(8007)

Question 103587: Is the following trinomial a perfect square?
x^2 + 2x � 1

Click here to see answer by edjones(8007)

Question 103577: Solve by completing the square.
4x^2 + 2x � 3 = 0

Click here to see answer by edjones(8007)

Question 103588: Solve by using the quadratic formula. x^2 � 9x + 20 = 0
Click here to see answer by jim_thompson5910(35256)

Question 103589: Find the x-intercepts.
y = x^2 � 2x � 8

Click here to see answer by jim_thompson5910(35256)

Question 103580: Solve by using the quadratic formula. 6x^2 + x + 1 = 0
Click here to see answer by jim_thompson5910(35256)

Question 103594: 18. Graph the quadratic equation after completing the given table of values. y = �x^2 � 2x
x y
�3
�2
�1
0
1

Click here to see answer by edjones(8007)

Question 103590: Solve. (x + 2)^2 = 7
Click here to see answer by Fombitz(32388)

Question 103593: Identify the axis of symmetry, create a suitable table of values, then sketch the graph (including the axis of symmetry).
y = �x^2 + 3x � 3

Click here to see answer by MathLover1(20849)

Question 103585: Solve. (x + 4)^2 = 16
Click here to see answer by Fombitz(32388)

Question 103618: x^2-4x+2 = 0
5x^2 - 2 = 2x
3x^2 - 6x = 2

Click here to see answer by MathLover1(20849)

Question 103617: Solve by completeing square
x^2=4-7x
3x^2-x-x-2=0
If the square of 2 less than an interger is 16, find the number(s)?
Click here to see answer by MathLover1(20849)

Question 103591: The height h in feet of an object after t seconds is given by the function
h = �16t^2 + 40t + 10.
How long will it take the object to hit the ground? Round your answer to the nearest thousandth

Click here to see answer by jim_thompson5910(35256)

Question 103616: Solve equations for x

(x-3)^2=10
(x+2)^2 = 16
Click here to see answer by MathLover1(20849)

Question 103646: I am having a hard time with this one can someone please help me?
Its a multiple choice question but I am having a hard time.
Solve by using the quadratic formula. 3x^2 = 11x + 4
A) -1/3,4
B) 1/3,-4
C) -1/4,3
D) 1/4,-4

Click here to see answer by stanbon(75887)

Question 103662: Find the constant term that should be added to make the following expression a perfect-square trinomial. x^2 + 2x
Click here to see answer by Fombitz(32388)

Question 103666: Solve. x^2 � 10x + 16 = 0
Click here to see answer by Fombitz(32388)

Question 103667: The demand and supply equations for a certain item are given by
D = �5p + 40 S = �p^2 + 30p � 8
Find the equilibrium price
Click here to see answer by stanbon(75887)

Question 103659:
Click here to see answer by jim_thompson5910(35256)

Question 103659:
Click here to see answer by nicole_calvento27(1)

Question 103742: My problem is to find the number c such that the vertex of f(x)=x^2+8x+c lies on the x-axis.
Click here to see answer by stanbon(75887)

Question 103586: Please help me solve.
The length of a rectangle is 1 cm more than 2 times its width. If the area of the rectangle is 76 cm^2, find the dimensions of the rectangle to the nearest thousandth.
Click here to see answer by scott8148(6628)

Question 103749: My problem is if the vertex of f(x)=x^2+bx+c is at (2,4), find b and c.
Click here to see answer by scott8148(6628)

Question 103749: My problem is if the vertex of f(x)=x^2+bx+c is at (2,4), find b and c.
Click here to see answer by edjones(8007)

Question 103792: My question is if the vertex of f(x)=-x^2+bx+8 has y-coordinate 17 and is in the second quadrant, find b.
Click here to see answer by jim_thompson5910(35256)

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