a) log 2(base) (2x - 5) = log 2(base) 15
b) log 2(base) (x² + x - 3) = log 3(base) 81
A)
log₂ ( 2X - 5 ) = log₂ 15
2X - 5 = 15
2X = 15 + 5
2X = 20
X = 20/2
X = 10 → Resposta
Comments
A)
log₂ ( 2X - 5 ) = log₂ 15
2X - 5 = 15
2X = 15 + 5
2X = 20
X = 20/2
X = 10 → Resposta