Help ! Me please... (√5+√8)2-√90 (√6-√3)2+√50 2- в квадрате

Question

Help ! Me please...

(√5+√8)2-√90

(√6-√3)2+√50

2- в квадрате

Answer 1

1) (√5+√8)^2-√90 = 5 + 2√5*8+ 8 - √90 = 13 + 4√10 - 3√10 = 13 + √10

2) (√6-√3)^2+√50 = 6 - 2√18+3+√50 = 9 - 3√2 + 5√2 = 9+2√2