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Author(s): 
Pages: 26-28
Year: Issue:  3
Journal: School Journal of Mathematics

Keyword:  代数式分式方程施工方案单元测试化简原方程工程款用水价格领导小组工期;
Abstract: <正>一、填空题 1.在-1/2x,1/n+2,2/x-3/y,2/x-3/y,3x~2+1/3y~3,2/x+2-(y-2)~2,2x/π+2中,属于分式的是 2.在分式4x/x~2-1中.当x____时,它有意义;在分式|x|-3/x~2+3x中.当x____时.分式的值为0. 3.化简:-x/x~2-3x·(x~2-6x+9)=____. 4.若x-1/x=6,则x~2+/x~2的值为____. 5.某油库有汽油 mL,计划每天用去nL,实际用油每天节约了dL,那么这些油可以用____天,比原计划多用____天. 6.当x=____时、代数式1/x+2的值比代数式1-x/2+x的值小2.
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