Question

Resolva a equação (X-2) !=6 (X-4)!

Answer 1

(x-2)!=6(x-4)!
(x-2)(x-3)(x-4)!=6(x-4)!
(x-2)(x-3)=6
x²-5x+6=6
x²-5x=0
x(x-5)=0

x=0
x=5