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Express the Following in Terms of Log 5 And/Or Log 2: Log20

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Question

Express the following in terms of log 5 and/or log 2: log20

Sum
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Solution

log20
= log (22 x 5)
= log 22 + log 5
= 2 log 2 + log 5.

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Expansion of Expressions with the Help of Laws of Logarithm
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Chapter 7: Logarithms - Exercise 10.2

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Frank Mathematics Part 1 [English] Class 9 ICSE
Chapter 7 Logarithms
Exercise 10.2 | Q 2.1
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