The square root of (7+3√5)(7-3√5) is:

The square root of (7+3√5)(7-3√5) is:

A √5

B 4

C 2

D 3√5

Solution

Correct Answer: Option C

(7+3√5)(7-3√5)

= 7² - (3√5)²

= 49 - 45

= 4

So, the Square root is √4 = 2