因式分解xy(xy+2)+6(xy+8)-4(x+y-2)^2-16(x+y+1)谢谢

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因式分解xy(xy+2)+6(xy+8)-4(x+y-2)^2-16(x+y+1)谢谢

因式分解xy(xy+2)+6(xy+8)-4(x+y-2)^2-16(x+y+1)谢谢
因式分解xy(xy+2)+6(xy+8)-4(x+y-2)^2-16(x+y+1)
谢谢

因式分解xy(xy+2)+6(xy+8)-4(x+y-2)^2-16(x+y+1)谢谢
xy(xy+2)+6(xy+8)-4(x+y-2)^2-16(x+y+1)=