Simplify completely 12 times x to the third power minus 4 times x to the 2nd power plus 8 times x all over negative 2 times x.

−6x^2 + 2x + 4
−6x^2 + 2x − 4
6x^4 − 2x^3 + 4x^2
6x^2 − 4x^2 + 8x