Z^2-y^2+2xy-x^2因式分解 ...
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Z^2-y^2+2xy-x^2因式分解...Z^2-y^2+2xy-x^2因式分解...Z^2-y^2+2xy-x^2因式分解...Z^2-Y^2+2XY-X^2=Z^2-(X^2-2XY+Y^2)=
Z^2-y^2+2xy-x^2因式分解 ...
Z^2-y^2+2xy-x^2
因式分解 ...
Z^2-y^2+2xy-x^2因式分解 ...
Z^2-Y^2+2XY-X^2=Z^2-(X^2-2XY+Y^2)=Z^2-(X-Y)^2=(Z+X-Y)(Z-X+Y)
=z^2-(y-x)^2
=(z+y-x)(z-y+x)
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Z^2-y^2+2xy-x^2因式分解 ...
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