## anonymous one year ago simplify the radical expression by rationalizing the denominator 2/square root of 42 a. square root of 84/42 b. square root of 42/21 c. 21 square root of 21 d. sq root of 2

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1. anonymous

$a. \frac{ \sqrt{84}}{ 42 }$ b. $\frac{ \sqrt{42} }{ 21 }$ c. $21\sqrt{42}$ d. $\sqrt{2}$

2. TheSmartOne

Multiply sqrt of 42 on both the numerator and denominator.

3. TheSmartOne

$$\sf\Huge \frac{2}{\sqrt{42}}\times \frac{\sqrt{42}}{\sqrt{42}}=?$$

4. anonymous

I'm not sure how to solve it

5. triciaal

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6. triciaal

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