8:5=x:x:0.25=4:8 x:7=27:21 32乘以99
8:5=x:x:0.25=4:8 x:7=27:21 32乘以99
0.3x-x乘以0.25=21.15-7x
方程:15乘以(3x-8)-4乘以(2x+3)=6乘以(4x-4)-4怎么解
解方程 x+7x-5x+x=(15-5)乘以4
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?
(X除以10+X除以8)乘以4+5000=X
已知x=8+4乘以根号3,求根号x-根号(x-1)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
7x+(35-x)乘以4=155解方程
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),
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