Question

13 + 2x la a 2 = x la a 2 - 12

Answer 1

Separam termenii si obtinem 2x la a 2 =-12-13 deci x la a 2=-25 deci x=radical din -25 rezulta x=-5

Answer 2

$13+ 2x^{2}= x^{2} -12=> -x^{2} =25=>x=-5$