Question

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

Answer 1

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

Answer 2

Multiply sqrt of 42 on both the numerator and denominator.

Answer 3

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

Answer 4

I'm not sure how to solve it