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Re: how do you factor this?
Posted:
Oct 11, 2012 11:38 PM
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beautiful. thanks so much for your reply and especially your time. my
daughter will like it. appreciated.
s
On Thu, 11 Oct 2012 15:03:13 -0700 (PDT), jdmgt <jguerra000@yahoo.com>
wrote:
>On Oct 11, 12:01 pm, stoneboy <x...@x.com> wrote:
>> Hi, I am teaching my daughter how to factor equations and came across
>> an expression in a worksheet that looks like below:
>>
>> 1+a+b+c+ab+bc+ca+abc
>>
>> The answer given (no work shown) shows (a+1)(b+1)(c+1) would be the
>> factors. Sure enough, when I multiply all those terms, eventually, I
>> get the above result. How do I go about deciphering how to group and
>> factor the original equation above. Kinda confused. I was able to
>> group them and factor somewhat, but could not get it down to the
>> answer that is listed. Please help.
>>
>> Thanks
>>
>> s
>
>Let's form 4 groups: a+1 + ab+b + ac+c + bc+abc = (a+1)+b(a+1)+c(a
>+1)+bc(a+1)= (a+1)(1+b+c+bc)=(a+1)[b+1 +c(b+1)]
>Finally: (a+1)(b+1)(c+1)
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