求未知数:1/6x=1 2x:1=1/6:5 x-1/2=2x/5 2/5x=12 x-3/5x=3又1/2
(x-1)(x-2)(x-3)(x-4)=(x+5)(x+6)(x+7)求X等于几?
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
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
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
求未知数:1/6x=1 2x:1=1/6:5 x-1/2=2x/5 2/5x=12 x-3/5x=3又1/2
已知x=2π+1求 |x-1|+|x-2|+|x-3|+|x-4|+|x-5|+|x-6|+|x-7|+|x-8|+|x
1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少
5(X+2)-3(X-1)=32 求未知数X
5/3x=2/1x+7 求未知数x的值
已知x=9/2 求:[(x^+7x+10)/(x^2+6x+5)]×[(x^3+1)/(x^2
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
求函数y=\x-1\+\x-2\+\x-3\+\x-4\+\x-5\+\x-6\+.+\x-10\的最小值