1.2[x-3]^2=[2x-5][2x+1]

来源：学生作业帮编辑：灵鹊做题网作业帮分类：数学作业时间：2024/05/03 23:32:57

1.2[x-3]^2=[2x-5][2x+1]
2.2y^2+8y+8=0
3.-3/2x^2+x+2=0

1. 2[x-3]^2=[2x-5][2x+1]
2x^2-12x+18=4x^2+2x-10x-5
2x^2+4x-23=0
x^2+2x=23/2
[x+1]^2=25/2
x+1=+/-5/根2
x1=-1+5/根2
x2=-1-5/根2
2. 2y^2+8y+8=0
y^2+4y+4=0
[y+2]^2=0
y=-2
3. -3/2x^2+x+2=0
x^2-2/3x-4/3=0
[x-1/3]^2=4/3+1/9=13/9
x-1/3=+/-根13/3
x1=1/3+根13/3
x2=1/3-根13/3

x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 (2x-1)/(x-1)(x-2)=(x-5)/(x-2)(x-3) x/2x^2-11x-21=(x+7)/x^2-1 已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值 y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1 |X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10| 设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10), (3-x)/(1-x)-(5-x)/(7-x)+(x^2-x)/(x^2-8x+7)=1 解方程(x+1/x+2)-(x+2/x+3)=(x+5/x+6)-(x+6/x+7) 解方程：x+2/x+1-x+3/x+2=x+6/x+5-x+7/x+6 x-1\x-2+x-6\x-7=x-2\x-3+x-5\x-6 分式方程