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Algebra

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Rationalizing Binomial Denominators VI

ALGEBR-PFWEHZ

Write the expression without a radical in the denominator. In other words, rationalize the denominator:

$$\frac{1}{1+\sqrt{2}}$$

A

$1-\sqrt{2}$

B

$-1+\sqrt{2}$

C

$-1$

D

$\cfrac{1+\sqrt{2}}{3}$