Question

Which expression is equivalent to xy^2/9?

A) sqrtxy^9

B) 9sqrtxy^2

C) x(sqrty^9)

D) x(9sqrt^2)

Answer 1

`\text{Use:}\\\sqrt[n]{a^m}=a^(m)/(n)\\---------------\\xy^(2)/(9)=x\sqrt[9]{y^2}\to D.`