Answer:
4
Explanation:
The solution to 2 ln x = 4 ln 2 is x = ±4
We have 2 ln x = 4 ln 2
So we have
2 ln x = 4 ln 2
ln x² = ln 2⁴
Comparing both sides we have
x² = 2⁴ = 16
x = ±4
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