Question

√81x^4
I need to know how to solve it to

Answer 1

`√(81x^4)=√(81)\cdot√(x^4)=9x^2`

Answer 2

`√(81x^4)=√(81)\cdot√(x^4)=√(9^2)\cdot√((x^2)^2)=\boxed{9x^2}\\\\use:√(a^2)=a\ where\ a \geq 0`