# Tommi's profile - activity

 2019-09-27 17:57:53 -0600 asked a question Conjugate multiplication of square root Is there a simple way to simplify a formula using conjugate multiplication of the square roots? For example, when I perform var('a,b,d') exp = 1/(a+b*sqrt(d)) exp.full_simplify() I would like to get (b*sqrt(d) - a)/(b^2*d - a^2) but what I actually get is just the form that I started with. Even if I specify the assumptions assume(d,'real') assume(d>0) the conjugate multiplication does not happen automatically. I would like to be able to tell Sage, that I want the conjugate multiplication. In some cases that are relevant to me, the conjugate multiplication would simplify my expressions significantly.