Question

Log4(x pătrat +9)= log4 din 25

Answer 1

$log_{4}( {x}^{2} + 9) = log_{4}(25)$

${x}^{2} + 9 = 25$

${x}^{2} = 25 - 9$

${x}^{2} = 16$

$x = \pm \sqrt{16}$

$x = \pm4$