Question

Simplify square root of 81x^13 (assume that all variales are non-negative real numbers

Answer 1

\[\sqrt{81x^{13}} = \sqrt{9^2\times(x^6)^2\times x} = \sqrt{9^2}\times \sqrt{(x^6)^2}\times \sqrt{x}\]

gives
\[9x^6\sqrt{x}\]