SOLUTION: Let f(x) = x + 2 and g(x) = x2 Find ( g o f)(-5)

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Question 915127: Let f(x) = x + 2 and g(x) = x2 Find ( g o f)(-5)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
(g o f)(-5) means g(f(-5)). So we need to find g(f(x)) first. Then we can plug in x = -5

g(x) = x^2

g(f(x)) = (f(x))^2

g(f(x)) = (x+2)^2

(g o f)(x) = (x+2)^2

(g o f)(-5) = (-5+2)^2

(g o f)(-5) = (3)^2

(g o f)(-5) = 9

Let me know if you need more help or if you need me to explain a step in more detail.
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Thanks,

Jim