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Exercise

$3\sqrt{2}\:-\:\sqrt{18}$

Step-by-step Solution

1

Rewrite $18$ as a power

$3\sqrt{2}-\sqrt{2\cdot 3^{2}}$
2

The power of a product is equal to the product of it's factors raised to the same power

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

Multiply $-1$ times $3$

$3\sqrt{2}-3\sqrt{2}$
4

Cancel like terms $3\sqrt{2}$ and $-3\sqrt{2}$

0

Final answer to the exercise

0

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