- If f(x)=-2x-5 and g(x)=x^4, what is (g°f)(-4)?

A very hard question.

g [ f (x) ] = g [ -2x - 5 ] = (-1)^4 [ 2x - 5 ]^4
g [ f (- 4) ] = [ -13 ]^4
g [ f (- 4) ] = 28561

f(x) = -2x - 5
g(x) = x^4
(g°f)(-4)
= 256(3)
= 768

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Answer #1| 16/02 2017 04:4645 %