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Some products occur so frequently
in algebra that it is advantageous
to be able to recognize them
by sight. This will be particularly
useful when we talk about
factoring.
In the following examples
the special products of binomials
are multiplied out using the
FOIL method, and then simplified
What
you should to be able to recognize
by sight are these three formulas:
You should be able to recognize
these products both ways.
That is, if you see the left
side you should think of the
right side, and if you see
the right side you should
think of the left side. |
