(x-1)(x-2)-(x+3)(x-4)=4

Question

(x-1)(x-2)-(x+3)(x-4)=4

Answer 1

(х-1)(х-2)-(х+3)(х-4)=4
х^2-3х+2-(х^2-х-12)=4
х^2-3х+2-х^2+х+12=4
-2х=4-12-2
-2х = -10
х = 5