For any positive numbers a, b, and d, with b ≠ 1, logb(a)+logb(d) = logab²d.
What are positive numbers ?
The numbers that are greater than zero are considered positive numbers. Zero has no positive or bad aspects.
We've, logb(a)+logb(d)
it can be written as, logb +loga + logb + logd ( ∵ logxy = logx +logy )
= 2 logb + loga + logd
= logb² + loga + logd ( ∵ a logx = log x² )
= logab²d.
Learn more about Positive numbers from the given link
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