Question

[16^1/2+27^1/3]/27^-1/3

Answer 1

$(16^{ \frac{1}{2} }+27^{ \frac{1}{3}} )\div27^{- \frac{1}{3} }= \\ \\ ( \sqrt{16} + \sqrt[3]{27} )\div \sqrt[3]{27^{-1}} = \\ \\ (4+ \sqrt[3]{3^3} )\div \sqrt[3]{ \frac{1}{3^3} } = \\ \\ (4+3)\div \frac{1}3} = \\ \\ 7\times3=21$