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Thread: Which book to buy to learn all these?

  1. #1

    Which book to buy to learn all these?

    LCM of

    Numbers
    Fractions
    Rational expressions

    GCF of

    Numbers
    Fractions
    Rational expressions

  2. #2
    Elite Member
    Join Date
    Apr 2005
    Location
    USA
    Posts
    8,929
    Why not any Pre-Algebra book?

    Personally, though, there is SO MUCH online, doe it have to be a book? I might start with http://www.purplemath.com/

    TONS of material on every conceivable subject - not just those you requested, but so much after that, too.
    "Unique Answers Don't Care How You Find Them." - Many may have said it, but I hear it most from me.

  3. #3
    Thanks
    I found this from a pdf online .

    LCM
    1.
    Find the prime factorization of each
    number in the group.
    2.
    Make a list of ALL factors, raised
    to the HIGHEST power that appears in
    any factorization.
    3.
    Multiply out.

    GCF

    1.
    Find the prime factorization of each
    number in the group.
    2.
    Make a list of COMMON factors,
    raised to the LOWEST power that
    appears in any factorization.
    3.
    Multiply out

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