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I thought i might check my answers and confirm if theyre right or not.

the following have to be simplified and expressed with positive indices.

Below are the indices;

1. (√a^2b^3)^6

2. (x^a y^-b)^3 (x^3 y^2)^-a

3. (27x^3/8a^-3)^-2/3

4. {4√(x^-2/3 y^1/2)^3)}^-2/3

5. (4a^-2/ 9x^2)^1/2

6. (x * n√x 1/2)n^2/1-n

Any help would be greatly appreciated.

Thanks