SOLUTION: Please help me! If: f(x) = 4-x and g(x) = 1+x^2 find (g*f)(-2) Thanx

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Question 149980: Please help me!
If:
f(x) = 4-x and g(x) = 1+x^2 find (g*f)(-2)
Thanx
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
f%28x%29=4-x
g%28x%29=1%2Bx%5E2
Replace f(x) for x in g(x).
g%28f%28x%29%29=1%2B%284-x%29%5E2
Now replace x=-2 in the expression and solve.
g%28f%28-2%29%29=1%2B%284-%28-2%29%29%5E2
g%28f%28-2%29%29=1%2B%286%29%5E2
g%28f%28-2%29%29=1%2B36
g%28f%28-2%29%29=37