(1) means (x+2)=0 or (x-4)=0, and the solution is x=-2 or x=4.

(2) The shift term is simplified as (2x+ 1)(4x-3)=0, the solution is (2x+ 1)=0 or (4x-3)=0, and the solution is x=-? Or x=

Let this number be x, then it can be x? =7x, the simplified solution is x=0 or x=7.