3×(x+1)+4x+8=4(x+1)+5x-7
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
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
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
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+1分之x+2减去x+3分之x+4=x+5分之x+6减去X+7分之x+8 (解方程)
(x+2/x+1)-(x+4/x+3)-(x+3/x+2)+(x+5/x+4)
(X+2)/(X+1)-(X+4)/(X+3)=(X+6)/(X+5)-(X+8)/(X+7)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
3/x-1=4/x 6/x+1=x+5/x(x+1)
x(2x-5)>2x的平方-3x-4 (x+1)(x-3)+8x>(x+5)(x-5)-2 解不等式组