[apologies if this is a resend]

Hi.  I am having difficulty using sage to manipulate square roots.

Consider:

a = 1 + sqrt(2) + sqrt(3)
b= (a^2).expand()
c = sqrt(b)

Then 'y' should be equal to 'a'.

But, given 'y' I cannot make sage return the simple form.
Trying

y.simplify_full()

doesn't do what I want.

How do I make sage recognize that a=c, other than using n()?



-- 
Robin Hankin
Uncertainty Analyst
hankin.ro...@gmail.com

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