Simplify: (x2+2x+3)+(x2−2x−3)(x^2 + 2x + 3) + (x^2 - 2x - 3)(x2+2x+3)+(x2−2x−3).
2x22x^22x2
2x2+4x+62x^2 + 4x + 62x2+4x+6
000
x2x^2x2