计算: (1) ![]() (2)计算 ![]() ![]() |
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(2009•吉林)若|a|=5,b=-2,且ab>0,则a+b= . | |
(2009•孝感)若|m-n|=n-m,且|m|=4,|n|=3,则(m+n)2= . | |
比较大小:![]() ![]() |
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(2008•株洲)根据如图所示的程序计算,若输入x的值为1,则输出y的值为 .![]() |
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-2 3.(填“>,<或=”符号) | |
(-5)= . | |
(2009•鸡西)若0<x<1,则x,![]() A. ![]() B.x< ![]() C.x2<x< ![]() D. ![]() |
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(2009•天津)若x,y为实数,且|x+2|+![]() ![]() A.1 B.-1 C.2 D.-2 |
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在-2,3,-4,-5,6这五个数中,任取两个数相乘所得的积最大的是( ) A.10 B.20 C.-30 D.18 |
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