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    why can 2log10(10x) not be written as log10(10x) + log10(10x)? log10 means log in base 10

    EDIT: think i misread the question, i started off with log10 (10x^2), this cannot be written as 2log10(10x) can it as its not the whole of (10x) squared? in this case all I need to do is split it into log10(10) + log10(x^2)?
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    \log_{10} {10x^2} = \log_{10}{10} + \log_{10}{x^2} = 1 + 2 \log{x}
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    (Original post by tetra-s)
    why can 2log10(10x) not be written as log10(10x) + log10(10x)? log10 means log in base 10

    EDIT: think i misread the question, i started off with log10 (10x^2), this cannot be written as 2log10(10x) can it as its not the whole of (10x) squared? in this case all I need to do is split it into log10(10) + log10(x^2)?
    Your answer to the original problem is correct: 2 \log_{10}(10x) = \log_{10}(10x)+\log_{10}(10x). Your edit is also correct.
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    Thanks guys, needed to get this clarified so I know before the exam
 
 
 
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