# Greatest Common Factor

ALWAYS ALWAYS check for the GCF first .

Another way to think of the GCF is to look for the lowest power of each factor
that

appears in all terms . What, you say, is with the term thing ? Factors are
multiplied.

Terms are separated by a + or a -.

The hot tip for grouping : 4 terms. Here’s a memory device: you can find a GCF IF
you

look at the terms 2 by 2. Think of Noah’s ark – the animals went in 2 by 2.

The order to do factoring:

1. GCF

2. Grouping (4 terms, common factor 2by2.)

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