### Home > CC4 > Chapter 3 > Lesson 3.2.2 > Problem3-92

3-92.

For each expression below, write a simpler, equivalent expression using only positive exponents. Homework Help ✎

1. $(3x^2y)(5x)$

• When multiplying like terms, add the exponents.

• 15x³y

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

• Follow the steps in part (a).

• y

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

• When dividing like terms, subtract the exponents.

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

• Write the expression three times and then follow the steps in part (a).