Question

simpliy the folowing expression (√11-√7)(√11+√7)
$answer \: with \: full \: explaination$
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Answer 1

Step-by-step explanation:

$this \: \: \: eq \: \: \: is \: \: \: in \: \: \: the \: \: \: form \: \: \: \\ \\ (x + y)(x - y) = {x}^{2} - {y}^{2} \\ \\ here \: \: \: x = \sqrt{11} \\ \: \: \: \: \: \: \: \: \: \: \: \: y = \sqrt{7} \\ \\ = { \sqrt{11} }^{2} - { \sqrt{7} }^{2} \\ \\ = 11 - 7 \\ \\ 4$