ax^2-2axy+ay^2-2x+2y
2个回答
ax^2-2axy+ay^2-2x+2y
=a(x^2-2xy+y^2)-2(x-y )
=a(x-y)^2-2(x-y )
=(x-y)[a(x-y)-1)]
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ax^2-2axy+ay^2 分解因式
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