a与b互为相反数,c与d互为倒数,X的绝对值等于3
a+b=0,cxd=1,x=±3
[（a+b）+cd]x
=(0+1)×(±3)
=±3
已知a与b互为相反数,c与d互为倒数,X的绝对值等于3,求[（a+b）+cd]x的值
已知a与b互为相反数,c与d互为倒数,X的绝对值等于3,求[（a+b）+cd]x的值
数学人气：892 ℃时间：2019-08-21 21:53:22
优质解答
我来回答
类似推荐
猜你喜欢
- 1在RtΔABC中,AC=BC=5,D为BC上一点,且DB⊥AB于E,CD=DE.求(1)AE的长度?（2）ΔDEB的周长?
- 2智力测验：What has three hands, but only one face?What has three hands, but only one face?
- 34.解释下面各句中加点的“以”字的意义或用法.(4分）
- 4食堂原有大米500千克,吃了150千克,吃了几分之几?剩下几分之几?
- 5翻译：now the roads are crowded with cars ,trucks and buses.they are not safe for people
- 6照样子给下面的词语扩词.列：清秀—山清水秀.）
- 7960万平方千米等于多少平方米?
- 8我可以要一个吗?用英语怎么说.
- 9if i see him ,i _ him the news right away A、will tell B、tell C、would tell D、told
- 10一列火车3/4小时行驶60千米.照这样的速度行驶,这列火车从甲地开往乙地要用3小时.