Simplify (2x3)2⋅x−4x−1\frac{(2x^3)^2 \cdot x^{-4}}{x^{-1}}x−1(2x3)2⋅x−4
4x34x^34x3
4x4x4x
4x−14x^{-1}4x−1
x3x^3x3