Question

please solve this simplify
​

Answer 1

$( - 3 + \sqrt{5} )( - 3 - \sqrt{5} ) \\ \\ = - 3( - 3 - \sqrt{5} ) + \sqrt{5} ( - 3 - \sqrt{5} ) \\ \\ = 9 + 3 \sqrt{5} - 3 \sqrt{5} - {( \sqrt{5} )}^{2} \\ \\ = 9 - 5 \\ \\ = 4$

hope it helps

Answer 2

HELLO DEAR FRIEND

YOUR QUESTION

⏬⏬⏬⏬⏬⏬

$\large{( - 3 + \sqrt{5})( - 3 - \sqrt{5} ) }$

Here, if a = -3 , b = √5

then (a + b) (a - b) = a² - b²

$\large{( - 3 + \sqrt{5})( - 3 - \sqrt{5} ) }$

$\large{ {( - 3)}^{2} - { \sqrt{ - 5} }^{2} }$

$\large{9 - 5}$

$\large{ \boxed{ \boxed{ \huge \bf{4}}}}$

HOPE IT HELPS