Question

quanto que é log2 x + log4 x = 4?​

Answer 1

log x + log 4x = 4

2 2

log x + log 4 + log x = 4

2 2 2

log x + log 2² + log x = 4

2 2 2

log x + 2.log 2 + log x = 4

2 2 2

2.log x + 2.1 = 4

2

2.log x + 2 = 4

2

2.log x = 4 - 2

2

2.log x = 2

2

log x = 2/2

2

log x = 1

2

2¹ = x

x=2