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Re: How can I force mathematica to collect a symbol from a polynomial

• To: mathgroup at smc.vnet.net
• Subject: [mg130408] Re: How can I force mathematica to collect a symbol from a polynomial
• From: Bob Hanlon <hanlonr357 at gmail.com>
• Date: Wed, 10 Apr 2013 00:47:47 -0400 (EDT)
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• References: <20130409083015.0249069F0@smc.vnet.net>

expr=a+b+c;

expr2=a*HoldForm[Evaluate[Expand[expr/a]]]

a (1+b/a+c/a)

expr2//ReleaseHold//Simplify

a+b+c


Bob Hanlon



On Tue, Apr 9, 2013 at 4:05 AM, <syzhaoyu at gmail.com> wrote:

> Let's say I have a polynomial:
>           a+b+c
> Is there any way I can force mathematica to produce the following result:
>           a*(1+b/a+c/a)
>
> I think such transformation of polynomials should be very common; however,
> I have been trying all day and still can not get mathematica to do so
> automatically.
>
>

• References:
  • How can I force mathematica to collect a symbol from a polynomial
    • From: syzhaoyu@gmail.com