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September 14, 2014

September 14, 2014

Posted by **BL** on Tuesday, May 13, 2014 at 10:47pm.

g(X)2X-5

(Fog)(X)F(g(x))

3 (2X-5)-5X+1

6X-15-5X+1

2(3Xsquared-5X+1)-5

6Xsquared-10X+2-5

6Xsquared-10X-3

- Intermediate Algebra -
**Steve**, Tuesday, May 13, 2014 at 11:49pmf(x) = 3x^2-5x+1

g(x) = 2x-5

(fog)(x) = f(g) = 3g^2-5g+1

= 3(2x-5)^2 - 5(2x-5) + 1

= 3(4x^2-20x+25) - 5(2x-5) + 1

= 12x^2-60x+75-10x+25+1

= 12x^2-70x+101

Looks like you messed up on the -5(2x-5) part

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