Which of these is the composite function f(g(x))? f(x) = x2 – 5 g(x) = 9x

asked Aug 19, 2018 77.1k views

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Which of these is the composite function f(g(x))? f(x) = x2 – 5 g(x) = 9x – 2

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$f(x)=x^2-5\\\\g(x)=9x-2\\\\\\f(g(x))=\big(9x-2\big)^2-5=81x^2-2\cdot9x\cdot2+4-5=\boxed{81x^2-36x-1}$

Sasker answered Aug 25, 2018

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