(√7-6)(6+√7)вычислите

Question

(√7-6)(6+√7)вычислите

Answer 1

(sqrt(7) - 6)(6 + sqrt(7)) = (sqrt(7) - 6)(sqrt(7) + 6) - ((sqrt(7))^2 - 6^2) = 7 - 36 = - 29

Answer 2

(√7-6)·(√7+6)=(√7)²-6²=7-36=-29