If 2n+4 - 2n+2 = 3, then n is equal to :	Choose the correct option: A) 2 B) -2 C) 1 D) -1 E) None
Sol.   2n+4 - 2n+2 = 3 ⇔ 2n+2 (22 - 1) = 3 ⇔ 2n+2 = 1 = 20   ⇔ n+2 = 0 ⇔ n= -2.   Answer -2
<result>B</result>
If 2n+4 - 2n+2 = 3, then n is equal to :