3x^2-2xy-y^2=0因式分解
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3x^2-2xy-y^2=0因式分解3x^2-2xy-y^2=0因式分解3x^2-2xy-y^2=0因式分解(3x+y)(x-y)=0∴x=-y/3x=y3x^2-2xy-y^2=(3x+y)(x-y
3x^2-2xy-y^2=0因式分解
3x^2-2xy-y^2=0因式分解
3x^2-2xy-y^2=0因式分解
(3x+y)(x-y)=0
∴x=-y/3 x=y
3x^2-2xy-y^2=(3x+y)(x-y)
3x²-2xy-y²=﹙3x+y﹚﹙x-y﹚
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