What is the simpler form of the following expression?

(6x^3 – 1x^2 + 1) ÷ (2x + 1)
1 –3x^2 + 2x – 1
2 3x^2 – 2x + 1
3 –3x^2 + 2x – 1
4 3x^3 + 2x – 1

The simpler form of the expression (6x^3 – 1x^2 + 1) ÷ (2x + 1) is 3x^2 - 2x + 1.