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20 January, 14:38

When is factoring by grouping easier to use. How many terms must you have to have?

Does anybody know? : /; c

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  1. 20 January, 14:53
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    You must have 4 terms for factoring by grouping to be easier to use.

    For example ...

    x^2 + 10x + 2x + 20

    (x^2 + 10x) + (2x + 20)

    x (x+10) + 2 (x+10)

    (x+2) (x+10)

    The first line, the expression x^2+10x+2x+20, has four terms.

    Note: Just because you have four terms doesn't automatically guarantee you can factor
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