2(x^2-17xy-4y^2+2y) вот и все
14х^2-17ху-8у^2-17ху-12х^2+4у^2=
2х^2 - 34ху-4у^2
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2(x^2-17xy-4y^2+2y) вот и все
14х^2-17ху-8у^2-17ху-12х^2+4у^2=
2х^2 - 34ху-4у^2