solve 2log4-log3+2logx-4=0

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This can be written : log16-log3+logx²=4, log(16x²/3)=4. Assuming base 10, 16x²/3=10000. x²=30000/16, so x=√(30000/16)=100√3/4=25√3=43.3013 approx.
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