(x-y)^2+4z(x-y)+4z^2
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(x-y)^2+4z(x-y)+4z^2(x-y)^2+4z(x-y)+4z^2(x-y)^2+4z(x-y)+4z^2您好：(x-y)^2+4z(x-y)+4z^2=(x-y+2z)²不明
(x-y)^2+4z(x-y)+4z^2
(x-y)^2+4z(x-y)+4z^2
(x-y)^2+4z(x-y)+4z^2
您好：
(x-y)^2+4z(x-y)+4z^2
=(x-y+2z)²
不明白,可以追问
如有帮助,记得采纳,谢谢
祝学习进步!
(x-y)^2+4z(x-y)+4z^2
=[(x-y)+2z]^2
=(x-y+2z)^2
你好，很高兴回答你的问题
(x-y)^2+4z(x-y)+4z^2
=(x-y+2z)^2
(x-y)^2+4z(x-y)+4z^2
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