Question

скоротит. дріб 3√a -3√в:3√а²-3√в²

Answer 1

$\frac{ \sqrt{3}a-\sqrt{3}b }{\sqrt{3}a^2-\sqrt{3}b^2}= \frac{\sqrt{3}(a-b)}{\sqrt{3}(a^2-b^2)}= \\ = \frac{\sqrt{3}(a-b)}{\sqrt{3}(a-b)(a+b)} = \frac{1}{a+b}$