出版物经营许可证假:因式分解(x-y)(x-y)-4(x-y-1)
来源:百度文库 编辑:查人人中国名人网 时间:2024/04/30 06:23:11
(x-y)(x-y)-4(x-y-1)
=(x-y)^2-4(x-y)+4
=(x-y-2)^2
要记住完全平方公式!
(x-y)(x-y)-4(x-y-1)
=(x-y)^2 -4(x-y)+4
=(x-y-2)^2
解:(x-y)(x-y)-4(x-y-1)
=(x-y)^2-4(x-y)+4=(x-y-2)^2
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来源:百度文库 编辑:查人人中国名人网 时间:2024/04/30 06:23:11
(x-y)(x-y)-4(x-y-1)
=(x-y)^2-4(x-y)+4
=(x-y-2)^2
要记住完全平方公式!
(x-y)(x-y)-4(x-y-1)
=(x-y)^2 -4(x-y)+4
=(x-y-2)^2
解:(x-y)(x-y)-4(x-y-1)
=(x-y)^2-4(x-y)+4=(x-y-2)^2