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Math Help - Very basic question

  1. #1
    Member
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    Very basic question

    For some reason I am having a memory lapse, but I cannot remember basic algebra at the moment.

    Would these hypothetical questions and their solutions be correct?

    1. (2x)(3x) = 6x
    2. (2x)(1x) = 2x^2

    Thanks
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  2. #2
    Member Jonboy's Avatar
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    the first is incorrect.
    when you have like "bases" (the x's), and you multiply, then you add the exponents (the imaginary subscript that are ones).

    Or: a^b\cdot a^b = a^{b + b} = a^{2b}

    So for the first, you just multiply the regular numbers 2 and 3, which equals 6.
    then you have x\cdot x = x^{1 + 1} = x^2.

    The second is good, notice how you applied what I done above.
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  3. #3
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    Apr 2008
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    incorrect

    The first one is incorrect. (2x)(3x) = 6x^2
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