因式分解(x-y)³-x+y
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(x-y)³-x+y
=(x-y)[(x-y)²-1]
=(x-y)(x-y+1)(x-y-1)
=(x-y)[(x-y)²-1]
=(x-y)(x-y+1)(x-y-1)
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(x-y)³-x+y
=(x-y)³ -(x-y)
=(x-y)[(x-y)² -1]
=(x-y)(x-y-1)(x-y+1)
=(x-y)³ -(x-y)
=(x-y)[(x-y)² -1]
=(x-y)(x-y-1)(x-y+1)
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(x-y)^3 -(x-y)
=(x-y)[(x-y)^2 -1]
=(x-y)(x-y+1)(x-y-1)
=(x-y)[(x-y)^2 -1]
=(x-y)(x-y+1)(x-y-1)
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(x-y)^3-x+y
=(x-y)(x^2+xy+y^2)-(x-y)
=(x-y)(x^2+xy+y^2-1)
=(x-y)(x^2+xy+y^2)-(x-y)
=(x-y)(x^2+xy+y^2-1)
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=(x-y){(x-y)2-1}=(x-y)(x-y+1)(x-y-1)
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