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Stephen Tashi
#8
Jan30-12, 03:02 AM
Sci Advisor
P: 3,296
but it also produces a middle term x^(n+1)y+xy^(n+1).
Of course it does and
[itex] x^{n+1} y + x y^{n+1} = (xy) ( x^n + y^n) [/itex], as illustrated by my example for the case n = 4.