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计算:(1)48+23-33(2)(5-22)(5+22).-数学
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-九年级数学
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实数a、b在数轴上的位置如图所示,则化简=__________-八年级数学
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=__________,的立方根是__________.-八年级数学
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对正实数定义运算法则,若,则的值是____________.-八年级数学
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下列各式在实数范围内有意义,分别求x的取值范围。小题1:小题2:-九年级数学
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-九年级数学
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若,则估计m的值的取值范围是()A.2<m<3B.3<m<4C.4<m<5D.5<m<6-八年级数学
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如果,那么的结果是_____________.-九年级数学
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(1)_________(答案保留3个有效数字)(2)化简:_________-九年级数学
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要使有意义,则x取值范围是__________.-九年级数学
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化简的结果是()A.B.C.D.-九年级数学
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计算小题1:小题2:-九年级数学
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化简:-九年级数学
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函数的自变量x的函数是()A.x>-3B.C.x<3D.-九年级数学
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The machine _____ . It hasn’t worked for years and no one wants to repair it.A.didn’t workB.wasn’t w
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化简.(a>0)-九年级数学
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下列二次根式中,最简二次根式是()ABCD-九年级数学
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的同类二次根式是()ABCD-九年级数学
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计算的结果是().A.9B.3C.-3D.±3-九年级数学
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小题1:计算小题2:化简:-九年级数学
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化简.-九年级数学
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The latest unemployment figures will _______ next weekA.declareB.be declaredC.be announcedD.broadcas
题目简介
已知,求的值。-九年级数学
题目详情
答案
两个非负数相加等于0,所以两个非负数都为0
所以: