Question

Can someone help me out with this??
I am genuinely confused and my teacher won’t explain ?!?

Answer 1

`→ \sqrt[4]{81 {x}^(8) {y}^(4) } \\ = {81}^{( (1)/(4))} {x}^{ ((8)/(4))}{y}^{ ((4)/(4))}\\= \boxed{3 {x}^(2) y}✓`

3x²y is the right answer.