Question

the simplest form of (
$\sqrt{11 - \sqrt{7)} }$
$( \sqrt{11 + \sqrt{7)} }$
​

Answer 1

Step-by-step explanation:

$( \sqrt{11} - \sqrt{7} )( \sqrt{11} + \sqrt{7} ) \\ = 11 - 7 = 4 \\ \\ \\ \\ formula \: \: used \\ {a}^{2} - {b}^{2} = (a + b)(a - b)$