SOLUTION: Please help me solve this question: 7x^2-7x-1=0 I need the solutions for this problem. If you can help me figure out the F.O.I.L. method part of this problem I can do the rest.

Question 855115: Please help me solve this question: 7x^2-7x-1=0
I need the solutions for this problem. If you can help me figure out the F.O.I.L. method part of this problem I can do the rest. Thank you!
This is the part i am having trouble with:
(7x+1)(x-7) ???

Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
(7x+1)(x-7) will not give the trinomial quadratic expression in your equation.

If you want to factor the left side of , then you can try to look for two number whose sum is -7 and whose product is -1. Try to arrange a form, (7x__a)(x___b). Can some combination be found? Integers?

There is the complication that coefficient on the x^2 term must be 7; no matter - we look for combinations of numbers at least which give -1 product.

(7x___)(x___) and we can only use 1 and -1. We have two ways to do this.
-
------ does not give us the quadratic we want.
-
-------still does not give us the quadratic we want.

USE THE GENERAL SOLUTION TO A QUADRATIC FORMULA.
Instead of carrying those solution steps for your example, I refer to a lesson about solving quadratic equations using completing the square or the general solution.
Solve a Quadratic Equation using the General Solution
RELATED QUESTIONS
Can someone please help me on the following problem? I need to evaluate this... (answered by rcmcc)

Hello, I'm taking Calculus online and have a homework problem I'm having trouble with. (answered by Alan3354)

Can you please help me solve this problem using the snowflake method?: 7x^2-32x-60 (answered by josgarithmetic,MathTherapy)

Can you help me with this problem. f(x)=5x+4; g(x)=7x-1 and I need to solve for... (answered by Alan3354,fractalier)

please help me figure this out Solve for X 8(x-1)+3 = 7x-6-5x (answered by stanbon)

Can you help me with this problem? I can't remember of its completing the square or... (answered by lwsshak3)

Can someone help me with these two problem. I have to find b�-4ac and number of real... (answered by mananth)

please help me solve this problem, i have been out of school for 28 years and have never... (answered by Edwin McCravy)

I�m really confused with this; please help me solve this problem. a) Solve x^2+7x-1=0... (answered by Alan3354)