Question

solve this please:
(x-1)(x+1)(x+4)​

Answer 1

Step-by-step explanation:

solution

$= (xx + x - x - 1)(x + 4) \\ = (x {}^{1 + 1} + x - x - 1)(x + 4) \\ = (x {}^{2} - 1)(x +4) \\ = x {}^{2} x + x {}^{2}4 - x - 4 \\ = x {}^{2 + 1} + 4x {}^{2} - x - 4 \\ = x {}^{3} + 4x {}^{2} - x - 4$