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MathGroup Archive 2009

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Re: How to ±

  • To: mathgroup at smc.vnet.net
  • Subject: [mg103689] Re: How to ±
  • From: olliH <oliver.hofherr at googlemail.com>
  • Date: Fri, 2 Oct 2009 08:25:30 -0400 (EDT)
  • References: <ha243r$p76$1@smc.vnet.net>

When I do it like this:

x + ({1, -1}*5)^2

I get two solutions:

{25 + x, 25 + x}

For my problem I'm looking for a real +- Operator not a List


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