求因式分解 (x-y)∧2-6x+6y+9
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求因式分解 (x-y)∧2-6x+6y+9
求因式分解 (x-y)∧2-6x+6y+9
求因式分解 (x-y)∧2-6x+6y+9
原式=(x-y)^2-6(x-y)+9
=[(x-y)-3]^2
=(x-y-3)^2
(x-y)∧2-6x+6y+9
=(x-y)^2-6(x-y)+9
=(x-y-3)^2
把x-y看做是一个整体,运用整体思想,利用完全平方差分解
求因式分解 (x-y)∧2-6x+6y+9
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