Question

помогите решить сократит дробь​

Answer 1

$1) \frac{x-18}{\sqrt{x}+3\sqrt{2}}=\frac{(\sqrt{x} -3\sqrt{2})(\sqrt{x}+3\sqrt{2}) }{\sqrt{x}+3\sqrt{2}} =\sqrt{x} -3\sqrt{2}.\\2) \frac{4a^2-4a\sqrt{3b}+3b}{2a\sqrt{b}-b\sqrt{3} }=\frac{(2a-\sqrt{3b})^2}{\sqrt{b}(2a-\sqrt{3b})} =\frac{2a-\sqrt{3b}}{\sqrt{b}}.$