Question

How does one solve this?

Answer 1

First eliminate both roots by squaring both monomials.

(√42x^5)² = 42x^5

(√6x³)² = 6x³

Then divide

42/6 = 7

x^5/x³ = x^(5 - 3) = x²

7x², or (D) is your answer

hope this helps

Answer 2

The answer is a. $x\sqrt{7}$