1/8*(x+0.5)=75
解方程;2(X-0.7)=4.8 1/8(X+0.5)=75% 9*8-4X=60 5X-20%X=19.2 3X-0.
解方程 x+4/11x=75 x-1/4x=120 3x+12x=180 8x-x=175
解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1
30%x+0.5x=1/4x+8/5x=多少
y=2x^2-4x-8 y=0.5x^2+2x-1
( 3.6-1)x=3.25 12.5x-0.9x=52.2 x-0.72x=0.336 8x-0.5x=37.5 0.
x/2+x/8+x/12+x/20=1
X-5+8*X=7*X-2*X-1
解方程:1/(x*x+11x-8)+1/(x*x+-8)+1/(x*x-3x-8)=0
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),
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