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9. Roots and Radicals

9. Roots and Radicals / Introduction to Radical Expressions / 문제 1

문제 1

Which notation is used to explicitly denote both the principal root and the negative root of $x$ simultaneously?

A

$\pm \sqrt{x}$

B

$\sqrt{x}$

C

$- \sqrt{x}$

D

$x^{2}$