log² x - log x⁷ = log² x - 2 <= kurangi kedua ruas dgn log² x
- log x⁷ = -2
log x⁷ = 2
7.log x = 2
log x = 2/7
x = 10^(²/₇)
x = ⁷√(100)
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log² x - log x⁷ = log² x - 2 <= kurangi kedua ruas dgn log² x
- log x⁷ = -2
log x⁷ = 2
7.log x = 2
log x = 2/7
x = 10^(²/₇)
x = ⁷√(100)