\(A=2a^2.\sqrt[3]{\dfrac{b^3}{8a^6}}\left(a\ne0,b\ge0\right)\)
\(=2a^2.\dfrac{b}{2a^2}=b\)
=> Chọn A
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\(A=2a^2.\sqrt[3]{\dfrac{b^3}{8a^6}}\left(a\ne0,b\ge0\right)\)
\(=2a^2.\dfrac{b}{2a^2}=b\)
=> Chọn A