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河北省2019年中考数学一轮复习第一章数与式第四节分式好题随堂演练.doc

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1 / 1分式好题随堂演练1在式子 ， ， ， ， ，9x 中，分式的个数有( )1a 2xy 3a2b3c4 56 x x7 y8 10yA2 个 B3 个 C4 个 D5 个2(2018金华)若分式 的值为 0，则 x的值是( )x 3x 3A3 B3 C3 或3 D03(2017山西)化简 的结果是( )4xx2 4 xx 2Ax 22x Bx 26xC D.xx 2 xx 24(2018江西)若分式 有意义，则 x的取值范围为 1x 15(2018成都)化简：(1 ) .1x 1 xx2 1参考答案1B 2.A 3.C 4.x1 5.x1

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