There are 3 problems I am having issues with due to order of operations and negative exponents/fractions:

(2x(x + 6)^4) − (4x^2(x + 6)^3)

(x^-1(2 − x^2)) + (x^-2(2 − x^2)^2)

(7-3x)^(2/3) + 3/2x(7-3x)^-(1/3)

Help of any sort would be nice. Solutions are cool so I can work through it to figure out how to get the answer, or hints on steps to take are awesome too.

Appreciate it, guys, you are awesome. :)