Question

Помогите пожалуйста!!!!)))
(√7-6)(6+√7)===

Answer 1

6√7+7-36-6√7=7-36=-29

Answer 2

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