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Trinomial Identity

(x^2+axy+by^2)(t^2+atu+bu^2)=r^2+ars+bs^2,
(1)

where

r=xt-byu
(2)
s=yt+xu+ayu.
(3)

See also

Trinomial

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Cite this as:

Weisstein, Eric W. "Trinomial Identity." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/TrinomialIdentity.html

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