(x²+y²)²-4x²y²
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/08 21:03:46
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(x²+y²)²-4x²y²
(x²+y²)²-4x²y²
(x²+y²)²-4x²y²
(x²+y²)²-4x²y²
=(x²+y²+2xy)(x²+y²-2xy)
=(x+y)²(x-y)²
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来源:学生作业帮助网 编辑:作业帮 时间:2024/09/08 21:03:46
(x²+y²)²-4x²y²
(x²+y²)²-4x²y²
(x²+y²)²-4x²y²
(x²+y²)²-4x²y²
=(x²+y²+2xy)(x²+y²-2xy)
=(x+y)²(x-y)²