Question

\(\dfrac{2a+\sqrt{ab}-3b}{2a-5\sqrt{ab}+3b}\)

nhanh hộ mình !

 

Answer 1

Bạn muốn nhanh thì cần ghi đầy đủ đề.

Answer 2

\(\dfrac{2a+\sqrt{ab}-3b}{2a-5\sqrt{ab}+3b}\\ =\dfrac{2a-2\sqrt{ab}+3\sqrt{ab}-3b}{2a-2\sqrt{ab}-3\sqrt{ab}+3b}\\ =\dfrac{2\sqrt{a}\left(\sqrt{a}-\sqrt{b}\right)+3\sqrt{b}\left(\sqrt{a}-\sqrt{b}\right)}{2\sqrt{a}\left(\sqrt{a}-\sqrt{b}\right)-3\sqrt{b}\left(\sqrt{a}-\sqrt{b}\right)}\\ =\dfrac{\left(\sqrt{a}-\sqrt{b}\right)\left(2\sqrt{a}+3\sqrt{b}\right)}{\left(\sqrt{a}-\sqrt{b}\right)\left(2\sqrt{a}-3\sqrt{b}\right)}\\ =\dfrac{2\sqrt{a}+3\sqrt{b}}{2\sqrt{a}-3\sqrt{b}}\)

Tick nha