Question

Simplify : (√3 +√7) (√3-√7)​

Answer 1

(√3+√7)(√3-√7)=3-√21+√21-7= -4

Answer 2

Step-by-step explanation:

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