Akar akar persamaan. Tentukan X1 + x2

2log^2 x - 2log x +8 = 0
(2log x -4)(2log x +2) = 0
2log x -4 = 0
2log x = 4=> x = 2^4 =>x = 16
2log x +2 = 0
2log x = -2=> x = 2^-2 =>x = 1/4
x1 +x2 = 16+1/4 = 16 1/4