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x log (2x - 2) = xlog (x + 2)
2x - 2 = x + 2
2x - x = 2 + 2
x = 4
no.6
² log 5 . 25 log 16
² log 5 . 5² log 2^4
4/2 ² log 5.^5log 2
2.² log 2
2.1 = 2