a²-3a+1=0问:一a+1/a二a²+(1/a²)三(a-1/a)²四a
来源:学生作业帮 编辑:搜狗做题网作业帮 分类:数学作业 时间:2024/07/22 21:11:10
a²-3a+1=0问:一a+1/a二a²+(1/a²)三(a-1/a)²四a³+(1/a³)五a四次方+1/a四次方六(a+1/a)四次方七(a-1/a)四次方八(a+1/a)³九(a-1/a)³
![a²-3a+1=0问:一a+1/a二a²+(1/a²)三(a-1/a)²四a](/uploads/image/z/17616887-71-7.jpg?t=a%26%23178%3B-3a%2B1%3D0%E9%97%AE%EF%BC%9A%E4%B8%80a%2B1%2Fa%E4%BA%8Ca%26%23178%3B%2B%EF%BC%881%2Fa%26%23178%3B%EF%BC%89%E4%B8%89%EF%BC%88a-1%2Fa%EF%BC%89%26%23178%3B%E5%9B%9Ba%26%23)
a²-3a+1=0,则a+1/a=3
a+1/a=3
a²+(1/a²)=(a+1/a)²-2=9-2=7
(a-1/a)²=(a+1/a)²-4=9-4=5
a³+(1/a³)=(a+1/a)(a²-1+1/a²)=3(7-1)=18
a四次方+1/a四次方=(a²+1/a²)²-2=47
(a+1/a)四次方=3^4=81
(a-1/a)四次方=5²=25
(a+1/a)³=3^3=27
(a-1/a)³=5^3=125
a+1/a=3
a²+(1/a²)=(a+1/a)²-2=9-2=7
(a-1/a)²=(a+1/a)²-4=9-4=5
a³+(1/a³)=(a+1/a)(a²-1+1/a²)=3(7-1)=18
a四次方+1/a四次方=(a²+1/a²)²-2=47
(a+1/a)四次方=3^4=81
(a-1/a)四次方=5²=25
(a+1/a)³=3^3=27
(a-1/a)³=5^3=125
a(a²-a-1)+1
9-a²/a²+6a+9÷a²-3a/a+1/a
(a- 2a/a)÷1-a² / a²+a
(高一集合)已知A={2,4,a*a*a-2a*a-a+7},B={1,a+3,a*a-2a+2,a*a*a+a*a+3
计算:a²+9-6a分支2a²-4a-6/(4a+8)×4+3a-a²分支6+a-a
先化简,再求值:【(a-2/a²+2a)-(a-1/a²+4a+4)】÷(a-4/a+2),其中a=
(a²+a+1-a³/a-1)×(1+a-4a/1+a)
当a=1/√3+2时,求(a²-a-6)/(a+2)-√(a²-2a+1)/(a²-a)的
已知a=2+根号3分之一,求a-1分之(a²-3a+2)-a²-a分之根号a²-2a+1的
化简求值;(a-2/a²-4a+4)-(a+3/a²)的和,除以1/a²-3a 其中a=4
已知a²-3a+1=0,求a²+(a^-2)的值
(1+a)(1-a)+(a-2)²