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

Question

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

✓

Answer

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

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