Question

simplify (√3+√7) (√3-√7)​

Answer 1

$( \sqrt{3} + \sqrt{7}) ( \sqrt{3} - \sqrt{7} ) \\ {( \sqrt{3} )}^{2} - {( \sqrt{7} )}^{2} \\ = 3 - 7 \\ = - 4$

Formula used :

$(a + b)(a - b) = {a}^{2} - {b}^{2}$