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Simplifying Radical Expressions

9. Roots, Radicals, and Complex Numbers / Simplifying Radical Expressions / 문제 1

문제 1

Compute $\sqrt{2} \cdot \sqrt{18}$ and give the final simplified numerical answer.

A

$6$

B

$the square root of 20$

C

$3$

D

$2 the square root of 3$