【1】2x+2.5x+1.5x=5

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/11/07 19:16:21

【1】2x+2.5x+1.5x=5
【2】3y+7=_3y-5
【3】3(x-2)+1=x-(2x-1)
【4】3/2(x+1)-3x+1/6=1

1 6x=5
x=5/6
2 6y=-12
y=-2
3 3x-6+1=x-2x+2
3x-x+2x=2+6-1
4x=7
x=7/4
4 3/2x+3/2-3x+1/6=1
-3/2x=1-1/6-3/2
-3/2x=-2/3
x=4/9

【1】2x+2.5x+1.5x=5 x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x 30X-2X=84 5.8X-X=60 6.6X-5X=8 4X-X=24 1.5X-X=1 (x/x-1)+(5x-2)/x*x-x=1 求x（有图）解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) 2(x+1)-(3-x)=2(1.5x-2.5) 6/x+1=x-5/x^2+x X-5+8*X=7*X-2*X-1 (2x-1)/(x-1)(x-2)=(x-5)/(x-2)(x-3) x/2x^2-11x-21=(x+7)/x^2-1 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 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),