Question

√7-2/√7+2 ............​

Answer 1

Solution :-

√7-2/√7+2

=} (√7-2 x √7 -2)/(√7+2) x (√7-2)

=} (√7-2)²/(√7)² - (2)²

[ By the identity :- (a-b)(a+b) = (a)² - (b)² ]

=} ((√7)² + (2)² - 2 x √7 x 2)/ 7 - 4

[ By identity :- (a-b)² = a² + b² - 2ab ]

=} (7 +4 -4√7)/3

=} 11-4√7/3

This is the answer , hope it helped...