Question

log in baza 2 din (x la 2 + 3) = 5
Va rog ajutati ma sa rezolv. Mtumesc.

Answer 1

$\log_2(x^2+3)=5\\C.E.\, x^2+3>0\:(A),\forall x\in\mathbb{R}\\x^2+3=2^5\\x^2=29\\\displaystyle x_{1,2}=\pm\sqrt{29}$