2*3^(x-1)-4*3^(x-2)=150

Question

2*3^(x-1)-4*3^(x-2)=150

Answer 1

2*3^(х-1)-4*3^(х-2)=150
2х3^1х(х-1)-4х3
2(3^1х(х-1)2х3)
2(3х)х-1-6)
2х3( |х-1|)-2)
6( |х-1|-2)