Question

Write 1/2^1-n in non- fractional form.

Answer 1

Multiply numerator and denominator by
2^-(1-n):

1/2^(1-n) = 2^-(1-n)/1 = 2^(-1+n) =
2^(n-1)

Answer 2

Write 4+2x/x^-1in non fractional from