Answer
$243x^{3}$
Work Step by Step
You are given $3^{2}$(3x$)^{3}$.Simplify the expression:
($3^{2}$)($3^{3})$$x^{3}$ -multiply every term in the parentheses to the power of 3-
$3^{5}$$x^{3}$ -add the exponents of numbers with a similar base and simplify the exponents-
=243$x^{3}$
