5a²+6ab+b²x的3次方-xy+xz-yz m²-5m 若m=2n+1 则m²-4mn+4n²的值
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![5a²+6ab+b²x的3次方-xy+xz-yz m²-5m 若m=2n+1 则m²-4mn+4n²的值](/uploads/image/z/3761278-70-8.jpg?t=5a%26%23178%3B%2B6ab%2Bb%26%23178%3Bx%E7%9A%843%E6%AC%A1%E6%96%B9-xy%2Bxz-yz+m%26%23178%3B-5m+%E8%8B%A5m%3D2n%2B1+%E5%88%99m%26%23178%3B-4mn%2B4n%26%23178%3B%E7%9A%84%E5%80%BC)
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5a²+6ab+b²x的3次方-xy+xz-yz m²-5m 若m=2n+1 则m²-4mn+4n²的值
5a²+6ab+b²
x的3次方-xy+xz-yz
m²-5m
若m=2n+1 则m²-4mn+4n²的值
5a²+6ab+b²x的3次方-xy+xz-yz m²-5m 若m=2n+1 则m²-4mn+4n²的值
5a²+6ab+b²=(a+b)(5a+b)
(a+b)(5a+b)