Question

Tolong dibantu ya nomor 1 sama 2

Answer 1

1. (a^-1 + b^-1)/ab
= (a^-1 + b^-1)/ab . ab/ab
= (a+b)/(ab)^2

2. 4^(2x - 1) - 16 . 4^-x = 0
4^(2x - 1) = 16 . 4^-x
4^(2x - 1) = 4^2 . 4^-x
4^(2x - 1) = 4^(2 - x)
2x - 1 = 2 - x
2x + x = 2 + 1
3x = 3
x = 3/3 = 1