Simplify the following expression:(5+7)(5-7) - Vidyadip

Question

Simplify the following expression:$(5+\sqrt{7})(5-\sqrt{7})$

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Answer

$(5+\sqrt{7})(5-\sqrt{7})$
As we know, $(a+b)(a-b)=\left(a^2-b^2\right)$
So, $5^2 - 7$
$25 - 7 = 18$

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