Question

log(2x+3)=2.am nevoie urgent !

Answer 1

$\it log_5(2x+3) = 2 \Rightarrow 2x+3 = 5^2 \Rightarrow 2x+3 = 25|_{-3} \Rightarrow 2x=22 \Rightarrow \\ \\ \Rightarrow x = 22:2 \Rightarrow x = 11 \\ \\ \\ Verificarea \ \ este\ \ imediat\breve{a} .$

Answer 2

cond. de existenta

2x+3>0 ⇔x>-3/2,

Rezolvare

2x+3=5²

2x=25-3

2x=22

x=11∈Domeniului de existenta