1.|a|+|b|_____|a+b|(选用一个适当的不等号填在横线上)2.当|x|+2010=|x-2010|时,有理数x的取值范围
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![1.|a|+|b|_____|a+b|(选用一个适当的不等号填在横线上)2.当|x|+2010=|x-2010|时,有理数x的取值范围](/uploads/image/z/596799-63-9.jpg?t=1.%7Ca%7C%2B%7Cb%7C_____%7Ca%2Bb%7C%EF%BC%88%E9%80%89%E7%94%A8%E4%B8%80%E4%B8%AA%E9%80%82%E5%BD%93%E7%9A%84%E4%B8%8D%E7%AD%89%E5%8F%B7%E5%A1%AB%E5%9C%A8%E6%A8%AA%E7%BA%BF%E4%B8%8A%EF%BC%892.%E5%BD%93%7Cx%7C%2B2010%3D%7Cx-2010%7C%E6%97%B6%2C%E6%9C%89%E7%90%86%E6%95%B0x%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4)
1.|a|+|b|_____|a+b|(选用一个适当的不等号填在横线上)2.当|x|+2010=|x-2010|时,有理数x的取值范围
1.|a|+|b|_____|a+b|(选用一个适当的不等号填在横线上)
2.当|x|+2010=|x-2010|时,有理数x的取值范围
1.|a|+|b|_____|a+b|(选用一个适当的不等号填在横线上)2.当|x|+2010=|x-2010|时,有理数x的取值范围
1)大于等于
当a,b>0时,左边等于右边
当a,b<0时,仍然左边等于右边
当a,b中一个大于0,一个小于0时,左边是大于右边的
2)小于等于0
右边的可以看作是x到2010的距离(数轴上)
左边的|x|可以看作是x到0的距离,再加上2010显然是x要小于0
看这么多字的份上,把分给我吧
1 大于等于
2 x小于等于0大于等于负2010
1 大于等于0
2 小于等于0
1,≥
2,x≤0
( )He _____ a bike.A.needs.B.( )He _____ a bike.A.needs.B.is need
a/b=a÷_____=a · _____=_____ · a=_____÷a
{a}____{a,b,c} {a,c,b}____{a,b} {a,b,c}_____{a,c,b} 空集_____{a,b,c}
They live _____.a.happy b.happily
is _____ ok?A everything B anything
英语动词形式填空1.A:Look at the children.What _____ they _____(do)?B:They _____(sing) and _____(dance).A:Listen!What song _____ they _____ (sing)?B:They _____(sing)a Russian song.2A:_____ you _____(go) fishing two hours ago?B:No,I ______.A:__
( ) 1.There is _____ “u” in _____ word “uniform.”.A) an,a B) an,the C) a,a D) a,the( ) 2._____ sign here stands for _____ mistake.A) A,a B) A,the C) The,a D) The,the( ) 3.We made Joyce _____ monitor ____ her experience.A) a,because B) the,bec
(a+b)=_____,(a-b)=_____.(填二次三项式)
若3a²+2|b-1|=0,则a=_____,b=_____
分解因式 b-2ab+a²b=_____
当a=-5,b=-3又3/1时,(1)a-b=_____.(2)-a-b=_____.(3)-a-(-b)=_____.
如果a/b=3/4,且a+b=21,那么b-a=_____?
1.已知a、b不是等于0,求a分之/a/+/b/分之b的值?2.若ab互为相反数,则/-a-1-b/=_____,b分之a=_____.
填写英语对话1.A:Is there a bridge over the _____?B:Yes,______ ______.2.A:_____there a forest inthe nature________?B:_____,there isn't.
若√(根号)a-2b+9和/a+b-1/互为相反数,a=_____ ,b=_____
Please draw a line _____ A and B.
计算:(a^2 b)^2÷a _____.
Lucy _____ a bag for school.A.need B.needs