Rearranging a formula

\(h=\sqrt[3]{\dfrac{3h}{p^2-2x}}\), where \(h\ne0\) and \(p>0\).

1. Find \(x\) when \(h=-1\) and \(p=2\).[2]
2. Express \(p\) in terms of \(h\) and \(x\).[3]