### Home > PC3 > Chapter 1 > Lesson 1.1.3 > Problem1-27

1-27.

Rewrite each expression in simple radical form.

1. $\sqrt { 18 }$

$\sqrt{9}\sqrt{2}$

1. $2\sqrt{27}$

$2\sqrt{9}\sqrt{3}$

1. $\sqrt { 32 b ^ { 3 } }$

$\sqrt{16}\sqrt{2}\sqrt{b^2}\sqrt{b}$

Your answer will need absolute value. A variable can usually represent any number. In this case, when a square root is taken, the answer is always positive. For example:

$\sqrt{(-5)^2}=5\text{ (not }-5)$