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ShoaibChaudhry:
Solve log4 (y − 9) + log4(3) = log4(81).
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supie:
@jhonyy9
jhonyy9:
use log(a)b +log(a)c = log(a)b×c log(a)b -log(a)c = log(a)b/c
jhonyy9:
rewrite 81 like power of 3
jhonyy9:
suppose log4(y-9) is the first term
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