answer of the hard question
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hope this helps you....
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Log(2×3×3×3×3)/7×7×7 +2log7/9-log1/7
=Log(2×3^4)/7^3+2log7/3^2 - log1/7
=Log2+log3^4-log7^3+2log7-2log3^2 - log1+log7
=Log2+4log3-3log7+2log7 -4log3-log1+log7
=Log2 - 3log7+3log7+log1
=log2 (because log1=0)
=Log(2×3^4)/7^3+2log7/3^2 - log1/7
=Log2+log3^4-log7^3+2log7-2log3^2 - log1+log7
=Log2+4log3-3log7+2log7 -4log3-log1+log7
=Log2 - 3log7+3log7+log1
=log2 (because log1=0)
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