Question

Simplify : (2√3+√5)(2√3-√5)

Answer 1

(2√3)²-(√5)². {using formula- (a+b)(a-b) =a²-b²}

=4×3-5

=12-5

=7

Answer 2

-13

(2✓3)^2-(5)^2

=(4×3)-25

=12-25

=-13

ANS=(-13)