Question

Mọi người giúp mình với

Answer 1

\(\sqrt{2a}-\sqrt{18a^3}+4\sqrt{\dfrac{a}{2}}\left(đk:a\ge0\right)\)

\(=\sqrt{2a}-3a\sqrt{2a}+2\sqrt{2a}\)

\(=3\sqrt{2a}-3a\sqrt{2a}=3\sqrt[]{2a}\left(1-a\right)\)

Answer 2

\(\sqrt{2a}-\sqrt{18a^3}+4\sqrt{\dfrac{a}{2}}\)

\(=\sqrt{2a}-3a\sqrt{2a}+2\sqrt{2a}\)

\(=3\sqrt{2a}-3a\sqrt{2a}\)