Question

value of (√11+7)(√11-7)

Answer 1

according to formula (a)^2 - (b)^2 = (a+b) (a-b)
(√11 )^2 - ( 7 )^2
11 - 49= -38

Answer 2

$( \sqrt{11} + 7)( \sqrt{11} - 7) \\ \\ ({ \sqrt{11} })^{2} - 7 {}^{2} \\ 11 - 49 \\ - 38$
I think it is ur answer