What are the steps to simplify the expression (6x2 − 3 − 5x3) − (4x3 + 2x2 − 8).

I'm not very good at math but this is probably correct.
1. 6x2 - 3 - 5x3= -6
2. 4x3 + 2x2 -8 = 8
3. -6 - 8
4. = -14

Equation: (6x2 − 3 − 5x3) − (4x3 + 2x2 − 8)
Start by doing the multiplication in the parenthesis: (12 − 3 − 15) − (12 + 4 − 8)
Next, do the addition in the parenthesis: (12 − 3 − 15) − (16 − 8)
Next, subtract: (-6) − (8)
Subtract once more:  (-6) − 8 = (-14)

 (6 x 2 − 3 − 5 x 3) − (4 x 3 + 2 x 2 − 8) = (-14)

Hope this helped!