>
其他
>
x²+2x+3=0,2x²+4x+2009=?
人气：210 ℃ 时间：2020-03-24 21:54:47
解答
答案是：2003 x2+2x=-3,2(x2+2x)+2009=2*(-3)+2009=2003.
推荐
若x^2+2x+3=0,则2x^2+4x+2009=___
已知x²-4x-1=0求代数式（2x-3)²-（x+y）（x-y）-y²的值
解方程①(x+3)²-4=0 ②x²-4x-3=0 ③（x-3)+2x（x-3）=0
3(x-2)=4x-2x²
x/（4x²-4x+1）÷1/（2x²-x）=?
I did what everyone does who has no idea what to do with themselves when they got out of college and went on to graduate
Tom has over ten books.(改同义句） Tom has ____ ____ ten books.
成语‘狡兔三窟’的来历,请告诉.
猜你喜欢
为什么四大文明古国都产生于各大流域
物质跟氧气发生的化学反应叫氧化反应_．
2011年3月12日是我国的第33个植树节,实验中学七年级1班和2班参加植树节,1班的植
《山居秋暝》翻译
No offense ,but by the time we're in the job market,won't that stuff be outdated?3Q
Does she like swimming?=Does she___________________?
观察下列数,找出规律
中性点不接地,发生单相短路时.
© 2025 79432.Com All Rights Reserved.
电脑版
|
手机版
