Chapter 6 Rational Exponents and Radical Functions - 6.3 Perform Function Operations and Composition - 6.3 Exercises - Skill Practice - Page 432: 36

See below.

Work Step by Step

In this case $(x^2-3)(4x)$ doesn't mean multiplication but plugging in $4x$ into $x$, which leads us to: $(4x)^2-3=16x^2-3$

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