Question

розв'язати ..........................

Answer 1

$2 {lgx}^{2} - {lg}^{2} ( - x) = 4 \\ 2lg( - x) ^{2} - {lg}^{2} ( - x) = 4 \\ 4lg( - x) - {lg}^{2} ( - x) = 4 \\ {lg}^{2} ( - x) - 4lg( - x) + 4 = 0$
Ответ: г)