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If log_2(3) = a and log_2(10) = b then an expression for log_2(90) is
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If log_2(3) = a and log_2(10) = b then an expression for log_2(90) is

User Admirko
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\log_290=\log_2(3^2\cdot10)=\log_23^2+\log_210=2\log_23+b=2a+b

User Akibo
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