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Margieeee
27.11.2019 •
Mathematics
Am i correct? and if not can you explain why?
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Ответ:
Ответ:
log7 + log7 − log7 = + log7
This is correct answer
Step-by-step explanation:
Explanation:-
we will use properties of logarithm
first property
i) log (ab) = log a + log b
second property
ii)![log(\frac{a}{b} ) = log a - log b](/tpl/images/0590/5710/94f14.png)
Third property
iii)![log x^{n} = n log x](/tpl/images/0590/5710/bf628.png)
Now given log7 +log7 - log7
= log(7X7) - log7 ( used first property)
= log(49)- log(7)
=
(used second property)
= + log(7)