Question

помогите плыззз.....​

Answer 1

Ответ:

$\frac{16x-25y}{4\sqrt{x}-5\sqrt{y}} = \frac{(4\sqrt{x}-5\sqrt{y})(4\sqrt{x}+5\sqrt{y})}{4\sqrt{x}-5\sqrt{y}\sqrt{x} } =  4\sqrt{x}+5\sqrt{y} = 4(3-\sqrt{y}) + 5\sqrt{y} = 12 - 4\sqrt{y} +\\\\ 5\sqrt{y} = 12 + \sqrt{y}$