Home » Aptitude » Square Root and Cube Root

The square root of (7 + 3√5) (7 - 3√5) is

Correct Answer: 2

Explanation:

(7 + 3√5)(7 - 3√5) = (7)2 - (3√5)2  = √49 - 45  = √4  = 2.

← Previous Question Next Question→

Discussion & Comments

No comments yet. Be the first to comment!
Join Discussion