Simplify the radical expression by rationalizing the denominator.

Question

2/ sqaure root 42

Answer 1

To rationalize the denominator, we multiply both the numerator and denominator by the square root of 42:

2 / √42 * √42 / √42 = 2√42 / 42

Now simplify by dividing out the common factor of 2:

√42 / 21

Therefore, the simplified radical expression with the rationalized denominator is √42 / 21.