谁来帮我做下面的数学题
谁来帮我做下面的数学题
(a2+b2)(a2+b2-8)+16=0,求a2+b2的值.
若1+x+x2+x3=0,求x+x2+x3+…+x2ooo的值.
(a2+b2)(a2+b2-8)+16=0,求a2+b2的值.
若1+x+x2+x3=0,求x+x2+x3+…+x2ooo的值.
数学人气:705 ℃时间:2020-03-28 08:11:30
优质解答
(a2+b2)(a2+b2-8)+16=0(a2+b2)²-8(a2+b2)+16=0(a2+b2-4)²=0a2+b2=41+x+x2+x3=0(1+x)+(x²+x³)=0(1+x)+x²(1+x)=0(1+x²)(1+x)=0x²≥0,(1+x²)≥1即(1+x)=0x=-1x+x...
我来回答
类似推荐
猜你喜欢
- 1找规律 1 ,2,-3,-4,5,6,( ),( ),.(第2007个数)
- 2一篇关于“Dogs are people's friend"急!
- 3三顾茅庐原本意思是什么?现在多用于形容什么?
- 4体积相等的实心铁球和木球
- 5we went to the supermarket yesterday 怎么变一般疑问句?
- 6求函数y=(x^2-4x+5)/(x^2-3x-4)的值域
- 7I prefer to work as a cleaner because I can be paid ____ the hour
- 8翻译It's near the hospital
- 9小明的房间地面是一个正方形,要铺地砖.无论选择边长是50cm的正方形地砖还是60cm的都正好铺完.
- 10划分句子成分.the days get longer and longer when summer comes.the boy who has traveled around