Question 1171599
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{{{g(x)=x^2-4}}}


{{{g(f(x))=(f(x))^2-4}}} Replace every x with f(x)


{{{g(f(x))=(-3x-5)^2-4}}} Plug in f(x) = -3x-5


{{{g(f(x))=(9x^2-30x+25)-4}}} FOIL


{{{g(f(x))=9x^2-30x+25-4}}}


{{{g(f(x))=9x^2-30x+21}}} Combine like terms
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