作业帮把年级数学题x+y/(x-y)(y-z)+x+z/(y-x)(y-z)
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把年级数学题x+y/(x-y)(y-z)+x+z/(y-x)(y-z)
把年级数学题x+y/(x-y)(y-z)+x+z/(y-x)(y-z)
把年级数学题x+y/(x-y)(y-z)+x+z/(y-x)(y-z)
分解因式得2006=2乘以17乘以59乘以1.令从左往右的四个因式分别为1.2.3.4式.注意到2式+3式+4式=1式.所以分解出的4个数应满足其中三个的和为另一个.发现2乘以4乘以4=17+59除以4+1处以4=32.注意到2.3.4式都是只有加一个负数,所以1式=32,所以此三式具有任意性,所以其余三式分别为17,14.75,0.25.在列出方程组解出三个值15.875,6.625,7.5.另外还有负数的加以分类讨论.如果你是小学生,做到这一步应该够了,如果是初中生,再做一下.
把年级数学题x+y/(x-y)(y-z)+x+z/(y-x)(y-z)
化简:(2x-y-z)/(x-y)(x-z)+(2y-z-x)/(y-z)(y-x)+(2z-x-y)/(z-x)(z-y)化简:(2x-y-z)/(x-y)(x-z)+(2y-z-x)/(y-z)(y-x)+(2z-x-y)/(z-x)(z-y)我知道把分母化成一样的、但是之后怎么算?
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