Question

Rezolvati in multimea numerelor realea ecuatia



log indice 2 (x²+4) = log indice 2 exponent 8

Answer 1

$log_{2}( x^{2} +4)= log_{2}8$
$x^{2} +4=8$
$x^{2} =4$
[tex]x=2;x=-2 [/tex]