因式分解 ax^2-2axy+ay^2+x^2-y^2

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因式分解 ax^2-2axy+ay^2+x^2-y^2
因式分解 ax^2-2axy+ay^2+x^2-y^2

因式分解 ax^2-2axy+ay^2+x^2-y^2
原式=a(x^2-2xy+y^2) + (x^2-y^2)
=a(x-y)^2 + (x+y)(x-y)
=(x-y)[a(x-y)+x+y]
=(x-y)(ax-ay+x+y)

(x-y)(ax-ay+x+y)

ax^2-2axy+ay^2+x^2-y^2
=a(x-y)²+(x-y)(x+y)
=(x-y)(a(x-y)+x+y)
=(x-y)[(a+1)x-(a-1)y]