(√a-√b) ^2. (4√t-5√s) ^2

Question

(√a-√b) ^2. (4√t-5√s) ^2

Answer 1

1) (√a - √b)^2 = (√a)^2 - 2 * √a * √b + (√b)^2 = a - 2√ab + b;

2) (4√t - 5√s)^2 = (4√t)^2 - 2 * 4√t * 5√s + (5√s)^2 = 16t - 40√ts + 25s.

Ответ: 1) a - 2√ab + b; 2) 16t - 40√ts + 25s.