Question

simplify (11 +root 7) ( 11 -root 7)​

Answer 1

$(11 + \sqrt{7} )(11 - \sqrt{7} )$

It is in the form of

$(a + b)(a - b) = {a}^{2} - {b}^{2}$

$a = 11 \\ b = \sqrt{7}$

$( {11)}^{2} - ( { \sqrt{7} })^{2} \\ 121 - 7 \\ 114$