Question

simplify the radical expression.
\sqrt{256x^{18}}
write your answer in the form a, \sqrt{b}, or a\sqrt{b}, where a and b are constants or expressions in x. use at most one radical in your answer, and at most one absolute value symbol in your expression for a.

Explanation:

Step1: Simplify constant radical

$\sqrt{256} = 16$

Step2: Simplify variable radical

$\sqrt{x^{18}} = x^9$

Step3: Multiply the two results

$16 \times x^9$

Answer:

$16x^9$