Question

the value of (√11+√7)(√11-√7) is

Answer 1

The answer for this question is 4

Answer 2

Here is your answer

$( \sqrt{11} + \sqrt{7} )( \sqrt{11} - \sqrt{7} ) \\ = ( \sqrt{11}) {}^{2} - ( \sqrt{7} ) {}^{2} \\ = 11 - 7 \\ = 4$
Hope it helps you