x+15%x=3.22 ,1/2x-25%x=10 ,x*(1-37.7%)=5/8 ,40%x=16 ,19-120%

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/10/01 13:04:22

x+15%x=3.22 ,1/2x-25%x=10 ,x*(1-37.7%)=5/8 ,40%x=16 ,19-120%x=7 ,50%x=22解方程

x+15%x=3.22 ,
0.15x= 3.22
x= 322/15
1/2x-25%x=10 ,
0.5x- 0.25x =10
0.25x =10
x= 40
x*(1-37.7%)=5/8
0.623x= 0.625
x=1
,40%x=16 ,
0.4x = 16
x= 40
19-120%x=7 ,
19- 1.2x = 7
1.2x = 12
x= 10
50%x=22
x= 22×2
x= 44

x+15%x=3.22 ,1/2x-25%x=10 ,x*(1-37.7%)=5/8 ,40%x=16 ,19-120% 1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550 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 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), x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x 解方程：（2x+5)(4x*x-10x+25)=8x(x*x+1) 解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1 1x()+2x()+3x()+4x()+5x()+6x()+7x()+8x()加9x()+10x()=1980 1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少 X-5+8*X=7*X-2*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 (3-x)/(1-x)-(5-x)/(7-x)+(x^2-x)/(x^2-8x+7)=1