Question

(x+4)(x-3)+(x-5)(x+4)=0

Answer 1

х*х+х-12+х*х-х-20=0   2х*х-32=0  х*х-16=0  х*х=16 х=+4  х=-4

Answer 2

(x+4)(x-3)+(x-5)(x+4)=0

x=-4, x=4