Simplify: (3x2+4x−1)+(x2−4x+1)(3x^2 + 4x - 1) + (x^2 - 4x + 1)(3x2+4x−1)+(x2−4x+1).
4x24x^24x2
4x2+8x4x^2 + 8x4x2+8x
2x22x^22x2
4x2−24x^2 - 24x2−2