Question

help: 1/2^x = 4^x/8 cum se rezolva?

Answer 1

1/2^x= 4^x/8
produsul mezilor = produsul extremilor
2^x * 4^x= 8
2^x *2^2x= 2^3
x+ 2x= 3
3x= 3
x= 1

Doamne ajuta!

Answer 2

1/2^x = 4^x/8

1/2^x = 2^2x/2^3

2^x × 2^2x = 2^3

2^(x+2x) = 2^3

x + 2x = 3

3x = 3

x = 3 : 3

x = 1