Question

Square root of 81x to the 4th power

Answer 1

`{ \left( \sqrt { 81x } \right) }^( 4 )\\ \\ ={ \left[ { \left( 81x \right) }^{ \frac { 1 }{ 2 } } \right] }^( 4 )\\ \\ ={ \left( 81x \right) }^( 2 )\\ \\ ={ 81 }^( 2 ){ x }^( 2 )\\ \\ =6561{ x }^( 2 )`