1/2xy+y2+1+x2-1/2xy-2xy-1
what?
Decomposition factor: x2-2xy + y2-6x + 6y + 9
=(x-y)2-6(x-y)+9
=(x-y-3)2
(2x2-y2)-[2y2-(x2+2xy)]=______ .
3(X²-y²)+2xy
RELATED INFORMATIONS
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