Question

(x+1) (x-3) = (x+1)(x-4)​

Answer 1

Answer:

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