Question

dados log a=5 , b= 3 e log c = 2 , calcule log ( a b²/c )

Answer 1

Propriedades:
log x + log y = log(x.y)
log x - log y = log(x/y)
log x² = 2.log x

Calculando:
log (a. b²/c)
log a + log b² - log c
log a + 2.log b - log c
(5) + 2.(3) - 2
5 + 6 - 2 = 9

Answer 2

log(a.b²/c)=log a + 2log b - log c
                  5 +2. 3 - 2 = 5+6-2= 9