5x-3(2x+1)=6x-4(5-3x)求x
(x-1)(x-2)(x-3)(x-4)=(x+5)(x+6)(x+7)求X等于几?
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
5x-3(2x+1)=6x-4(5-3x)求x
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
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
求函数y=\x-1\+\x-2\+\x-3\+\x-4\+\x-5\+\x-6\+.+\x-10\的最小值
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
7x-6+5x+1=4x+3-2x求x是多少
已知3x*x-x=1,求6x*x*x+7x*x-5x+2000
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?