若-3≤x≤2时,试化简|x-2|+√(x+3)2+√x2-10x+25
若-3≤x≤2时,试化简|x-2|+√(x+3)2+√x2-10x+25
求解sin(x)+lim(x→-∞)+2/x*[x,(x+2)*3]/x+x6+x2/(x+[x,x2+2x])+√x
(x2+3x+9)/(x2-27)+(6x)/(9x-x2)-(x-1)/(6+2x)
若-3小于等于x大于等于2时,试化简:|x-2|+√(x+3)(x+3)+√(x方-10x+25) √:根号,|x-2|
3x2-[7x-(4x-3)-2x2]
化简求值x/x-1-x+3/x2-1 x x2+2x+1/x+3,其中x=√2+1
(x-6)(x2+x+1)-x(2x+1)(3x-1)
多项式x2-3x+2,x2-18x+32,x2+x-6的公因式是( )
设函数f(x)=x2-2|x|-3(-3≤x≤3),
函数f(x)=2x−x2,(0≤x≤3)x2+6x,(−2≤x<0)的值域是( )
2x-(3x-1)+2(x2)
(x-2)(x2-6x-9)-x(x-5)(x-3)其中x= -1/3