分解因式:x2-2xy+y2-9
题型:解答题难度:一般来源:北京
分解因式:x2-2xy+y2-9 |
答案
x2-2xy+y2-9, =x2-2xy+y2-9, =(x2-2xy+y2)-9, =(x-y)2-32, =(x-y+3)(x-y-3). |
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