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Mathematics

Express the following as a single logarithm :

2 log10 8 + log10 36 − log10 (1.5) − 3 log10 2

Logarithms

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Answer

Given,

⇒ 2 log10 8 + log10 36 − log10 (1.5) − 3 log10 2

⇒ log10 82 + log10 36 − log10 (1.5) − log10 23

⇒ log10 64 + log10 36 − log10 (1.5) − log10 8

⇒ log10 64 + log10 36 − (log10 (1.5) + log10 8)

⇒ log10 (64 × 36) - log10(1.5 × 8)

⇒ log10 (2304) - log10(12)

log10 (230412)\log_{10} \space {\Big(\dfrac{2304}{12}\Big)}

⇒ log10 192

Hence, 2 log10 8 + log10 36 − log10 (1.5) − 3 log10 2 = log10 192.

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