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Re: how do you factor this?
Posted:
Oct 15, 2012 6:41 PM


In article <bk5e78psj1i2pkrf2n1urbsi6n1c9m2icr@4ax.com>, stoneboy <x@x.com> wrote:
> .... > 1+a+b+c+ab+bc+ca+abc > > .... How do I go about deciphering how to group and > factor the original equation above....
jdmgt has shown you how this one can be handled. As a general rule for expressions with more than one variable, it's often a good idea to concentrate on one variable at a time. Thinking of this example in terms of c gives
c(ab + a + b + 1) + (ab + a + b + 1)
= (c + 1)(ab + a + b + 1).
Then think of the factor (ab + a + b + 1) interms of b:
b(a + 1) + (a + 1) etc.
A similar trick sometimes works with expressions of higher degree.
Ken Pledger.



