Question

(√3-2)(√3+2)+(√5-3)(√5+3)

Answer 1

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