CPM Homework Help : PC3 Problem 1-69

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1-69.

Let $f(x)=2x^2-5$ and $g(x)=3x-1$ . Evaluate:

$f(g(2))$
Step (a):
$f(3(2)-1)\text{ or }f(5)$

$g(f(-1))$
Hint (b):
See the step in part (a).

$f(g(x))$
Step (c):
$f(3x-1)=2(3x-1)^2-5$

$g(f(x))$
Step (d):
$g(2x^2-5)=?$

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