### Home > INT1 > Chapter 10 > Lesson 10.1.2 > Problem10-37

10-37.

Rewrite each expression below. In parts (b) and (c), write an equivalent expression without parentheses.

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

• $2xy^2$

1. $(-mn)^3$

• What does the exponent tell about repeating ($−mn$) as a factor?

$-m^3n^3$

1. $(mn)^{-3}$

What is the rule for negative exponents?

1. $\frac { 3.2 \times 10 ^ { - 2 } } { 8 \times 10 ^ { 3 } }$

• This is equivalent to $(\frac{3.2}{8})(\frac{10^{-2}}{10^3})$