x(x-5)²-x(x-5)(x+5)
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/09 09:26:47
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x(x-5)²-x(x-5)(x+5)
x(x-5)²-x(x-5)(x+5)
x(x-5)²-x(x-5)(x+5)
x(x-5)²-x(x-5)(x+5)=x[x²-10x+25-(x²-5²)]=x(x²-10x+25-x²+25)=-10x²+50x
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来源:学生作业帮助网 编辑:作业帮 时间:2024/09/09 09:26:47
x(x-5)²-x(x-5)(x+5)
x(x-5)²-x(x-5)(x+5)
x(x-5)²-x(x-5)(x+5)
x(x-5)²-x(x-5)(x+5)=x[x²-10x+25-(x²-5²)]=x(x²-10x+25-x²+25)=-10x²+50x