Question

(x - 5)(x + 3) = (x – 7)(x + 4)​

Answer 1

Answer:

$(x - 5)(x + 3) = (x - 7)(x + 4) \\ \\ x(x + 3) - 5(x + 3) = x(x + 4) - 7(x + 4) \\ \\ {x}^{2} + 3x - 5 x - 15 = {x}^{2} + 4x - 7x - 28 \\ \\ - 2x - 15 = - 3x - 28 \\ \\ - 2x + 3x = - 28 + 15 \\ \\ x = - 13$

Answer 2

Answer:

(x-5) (x+3) = (x-7) (x+4)

x = -13