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[Axiom-mail] Simplifying expressions involving radicals

From: Alasdair McAndrew
Subject: [Axiom-mail] Simplifying expressions involving radicals
Date: Thu, 22 May 2008 12:25:13 +1000
Here's my situation:

a:=2^(1/3)+4^(1/3)
p(x)==x^3-6*x-6

I'd like p(a) to return zero; which it doesn't (although p(a::Float) returns 0.0).  How can I do this?

Thanks,
Alasdair
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