十條advanced ge indices數學題,急急急!!

Simplify the following and express your answers with positive indices.
1.(h^-3 k^4)^-1 / (h^2 k^-3)^2
2.27a^-4 b^3 / (-3a b^-2)^2
3.(a^n)^n(a)^(n+1) / a^-n
4.[a^-1/2 b^1/3]^3 / [a^-2/3 b^3]^2
5.(x^1/2 x y)^2 / ∛(x^2)
6.(x^2/3 y)^6 / (√x)^-2
7.-(3p^3 q^-4)^2 / (2p^2 q)^-3
8.[x^-7/3 ∛(x^4 y^6)] / (x^-1/3 y^2)^3
9.If (8^a)[2^(b+1)]=4^n, express n in terms of a and b.
10.Solve 3^2x-4*3^x+3=0 by the substitution y=3^x.