the task: Express each radical in exponential form. Simplify using the exponent laws when possible.
1. root of k^2/3
= and then?
2. root of ab^2
= (a)^1/2 (b^2)^1/2
= a^1/2 b^1
3. 4 root of 81 x^8 y^12
= (81)^1/4 (x^8)^1/4 (y^12)^1/4
= 81^1/4 x^2 y^3
4. cube root of x and square root of x
= (x)^1/3 (x)^1/2
Is that right or not? Explain please. Thanks.