Question

Given f(x) = x − 7 and g(x) = x2 .

Find g(f(4)).

Answer 1

Answer:

f=x-7/x

g=2x/x

g(f(4))

=2x/x*(x-7/x*4)

=2x/x*(-6*4)

=2x/x*(-24)

=2*(-24)

=(-48)