>
数学
>
a2+2a+b2 -2b+2=0,求a+b
a方+2a+b方 -2b+2=0,求a+b
人气:383 ℃ 时间:2020-01-27 02:55:28
解答
a^2+2a+b^2-2b+2=0
(a^2+2a+1)+(b^2-2b+1)=0
(a+1)^2+(b-1)^2=0
则a=-1,b=1
所以a+b=-1+1=0
推荐
a2-2a+b2+2b+2=0求a-b
a2+b2-2a+2b=-2 a+b=
(a-b)/(2a+2b)-(a2+b2)/(a2-b2) 通分计算
若a2+2a-1=0,b2+2b-1=0,则b/a+a/b=
化简:a2−b2a2+2ab+b2÷2a−2ba+b=_.
一只公鸡,母鸡
二进制小数怎么转换成十进制,如111.1(2)变成十进制是多少?
can you make change for a __________
猜你喜欢
one dollar and ten cents
简便计算:13/15*2/9+7/15*13/9
She has no paper____.A.to write with B.to write C.write on D.to write on
你知道小丽的储钱罐里有1元,5角,2角,1角的硬币各几枚?可能的情况有几种,(小丽的储钱罐里有7
这件衬衫是什么颜色?英文怎么说
next winter,______i'll stay in harbin,will surely be another exciting holiday.
关于文艺复兴和启蒙运动
how to write a letter in english
© 2024 79432.Com All Rights Reserved.
电脑版
|
手机版