no. 3 yah pake cara. help me!

3) [2^(n + 2) - 2^(n + 1)] / [2^n - 2^(n + 1)]
= [2^n . 2^2 - 2^n . 2] / [2^n - 2^n . 2] ===> misal 2^n = a
= [4a - 2a] / [a - 2a]
= (2a) / (-a)
= -2

smoga bermanfaat ya:))


#no4 sya gk tau benerr atau salah :d