Question

timed problem
score: 0/10 current time: 36.6
select the most simplified equivalent.
$3\sqrt{6} - 3\sqrt{2}$
answer
$3\sqrt{4}$
$\sqrt{5}$
$3\sqrt{6} - 3\sqrt{2}$
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Explanation:

Step1: Check radical simplification

The expression $3\sqrt{6}-3\sqrt{2}$ has radicals $\sqrt{6}$ and $\sqrt{2}$, which are already in simplest form (no perfect square factors other than 1 under the root).

Step2: Check like radicals

$\sqrt{6}$ and $\sqrt{2}$ are not like radicals, so they cannot be combined further.

Answer:

$3\sqrt{6}-3\sqrt{2}$