Chapter 5 Polynomials and Polynomial Functions - 5.3 Add, Subtract, and Multiply Polynomials - 5.3 Exercises - Skill Practice - Page 350: 47

Option: $D$

The given expression is $(3x-2y)^2$. We know that $(a-b)^2=a^2-2ab+b^2$. Substituting $a=3x$ and $b=2y$, we get $(3x-2y)^2=(3x)^2-2(3x)(2y)+(2y)^2$ $(3x-2y)^2=9x^2-12xy+4y^2$ Therefore the equivalent expression is option $D$.