### Home > CCA > Chapter 6 > Lesson 6.1.1 > Problem6-7

6-7.

Simplify each expression using only positive exponents. Homework Help ✎

1. $( 3 x y ^ { 3 } ) ( - 2 y )$

• Remember that when you multiply, you add the exponents.

• −6xy4

1. $( x ^ { 3 } y ^ { 2 } ) ( x ^ { - 2 } y ^ { - 2 } )$

• Refer to part (a).

• y0 = 1

1. $\frac { 6 x ^ { - 2 } } { 3 x ^ { 2 } }$

• Remember that when you divide, you subtract the exponents.

• $\text{Remember that}\ x^{-1}=\frac{1}{x}$

• $\frac{2}{\textit{x}^4}$

1. $(-2x)^{-3}$

• $\text{The expression is equivalent to }\frac{1}{(-2x)^3}$