Question

Sabendo que x = log 5 + log 8 - log 4, o valor de x é: *

( ) 2
( ) 10
( ) 4
( ) 1
( ) 0

Answer 1

Explicação passo-a-passo:

$\sf x=log~5+log~8-log~4$

$\sf x=log~\Big(\dfrac{5\cdot8}{4}\Big)$

$\sf x=log~\Big(\dfrac{40}{4}\Big)$

$\sf x=log~10$

$\boxed{\red{\sf x=1}}$