Question

subtract. write your answer in simplest form
$9\sqrt{2} - 4\sqrt{2}$

Explanation:

Step1: Identify like radicals

Both terms have $\sqrt{2}$, so they are like radicals.

Step2: Subtract the coefficients

Subtract the coefficients of $\sqrt{2}$: $9 - 4 = 5$.

Step3: Combine with the radical

Multiply the result by $\sqrt{2}$: $5\sqrt{2}$.

Answer:

$5\sqrt{2}$