Question

log 2 + log de x ao quadrado= log de (x+3)

Answer 1

Resposta:

log 2 + log x²= log de (x+3)

log 2x² =log (x+3)

2x² =x+3

2x²-x-3=0

x'=[1+√(1+24)]/4=(1+5)/4=3/2

x''=[1-√(1+24)]/4=(1-5)/4=-1

x=3/2   ou  x=-1