Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.



Re: how do you factor this?
Posted:
Oct 11, 2012 11:38 PM


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)



