\(a,=2\left|mn\right|\sqrt{2n}=2mn\sqrt{2n}\\ b,=5\left|pq\right|\sqrt{2q}=\left[{}\begin{matrix}5pq\sqrt{2q}\left(p\ge0\right)\\-5pq\sqrt{2q}\left(p< 0\right)\end{matrix}\right.\\ c,=2\left|mn\right|\sqrt{2m}=2mn\sqrt{2m}\\ d,=3\left|ab^2\right|\sqrt{3ab}=3ab^2\sqrt{3ab}\)
a) Ta có:
\(\sqrt{8m^2n^3}=2\sqrt{2}mn\sqrt{n}\)
b) Ta có:
\(\sqrt{50p^2q^3}=5\sqrt{2}.\text{|}p\text{|}q.\sqrt{q}\)