Question

2 power n subtract 2 power n-1=4

Answer 1

Step-by-step explanation:

(2^n-2)^n-1 =4

(2)^(n-2) (n-1) =2²

when bases are equal then powers are also equal

so,(n-2) (n-1) =2

n²-n -2n+2 =2

n²-3n +2 =2

n²-3n=2-2

n²-3n=0

n(n-3) = 0

n-3=0*n

n-3=0

so,n=3

Hope this will help you!