If f(x)=x332x, and g(x)=x1, what is (fg)(x)?

2 Answers
Jun 18, 2018

x33x2+x2

Explanation:

(fg)(x)=f(g(x))
f(g(x))=(x1)32(x1)3
=x33x2+x2

Jun 18, 2018

x4x32x2x+3

Explanation:

(fg)(x)=f(x)×g(x)

=(x332x)(x1)

=x3(x1)3(x1)2x(x1)

=x4x33x+32x2+2x

=x4x32x2x+3