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December 21, 2014

December 21, 2014

Posted by **G** on Friday, May 23, 2008 at 9:04pm.

2X^2+2X-4=0

The book says the answer is -2,1.

I got the -2,1 but not in the order of

-2,1.

I used FOIL to solve. When I use -2,1 I don't can not solve. When I use

1,-2. I can solve.

I am not clear.

- Algebra -
**Doug**, Friday, May 23, 2008 at 9:47pmThe order is not important. The answer is x=-2 or x=1

Verify by substituting for x

2(-2)^2+2(-2)-4=0

8-4-4=0

0=0

2(1)^2+2(1)-4=0

2+2-4=0

0=0

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