Question

((X+1)².(3X+3)+(X-1²).(1-X)-4) - 2X

Answer 1

$(( {x + 1})^{2} \times (3x + 3) + (x - {1}^{2} ) \times (1 - x) \times ( - 4)) - 2x \\ \\ (( {x}^{2} + 2x + 1) \times (3x + 3) + (x - 1) \times ( - 4 + 4x)) - 2x \\ \\ ((3 {x}^{3} + 6 {x}^{2} + 3x + 3 {x}^{2} + 6x + 3) + ( - 4x + 4 {x }^{2} + 4 - 4x)) - 2x \\ \\ ((3 {x}^{3} + 9 {x}^{2} + 9x + 3) + (4 {x}^{2} - 8x + 4)) - 2x \\ \\ 3 {x}^{3} + 13 {x}^{2} - x + 7$
Resposta final é esse polinômio de grau 3.