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March 30, 2015

March 30, 2015

Posted by **Jeana** on Thursday, August 27, 2009 at 11:48pm.

f(-x)=8x^2+x-3

work:

#1 8(x+1)(x+1)+x-3 then FOIL

8(x^2+x+x+2)+x-3

8x^2+16x+16+x-3

*8x^2+17x+13

#2 8(-x)^2-x-3

8x-x-3

*7x-3

I know on the first one you FOIL but im still getting it wrong?? The second one i thought was simple but im getting it wrong

- Math -
**bobpursley**, Friday, August 28, 2009 at 12:11am#1 8(x+1)(x+1)+x-3 then FOIL

8(x^2+x+x+2)+x-3 ****Nope, lots of errors, so here is what it should be..

8(x^2+x+x+**1**)+**(x+1)**-3

2)8(-x)^2 + (-x) -3

8x^2-x-3

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