Question

Вычислить
1. (5-√23)^2
2. (√10-3)×(3+√10)
3. (6√2)^2

Answer 1

(5-√23)² = 5²-2*5*√23+(√23)² = 25-10*√23+23 = 48-10*4,8 = 48-48=0

(√10 - 3)*(3+√10) = (√10)²-3² = 10-9=1

(6√2)² = 6²*2 = 36*2=72