(2X²-1/2+3X)-4(X-X²+1/2)化简
化简{x²-2x分之x+2-x²-4x+4x分之x-1}除以X分之(x-1)(X-4)乘以(2-x)
[(x+2)/(x²+2x)-(x-1)/(x²-4x+4)]÷(x-4)/x
先化简再求值:(x+2/x²-2x - x-1/x²-4x+4)÷ x-4/x,其中x=3/2
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
计算 ∫(x^4-2x^3+x^2+1)/x(x-1)² dx
3X+(X+2)+(X+1)*(X-1)=4*(X²+8)
(2X²-1/2+3X)-4(X-X²+1/2)化简
(3x/x-1-x/x+1)×x²-1/x 其中x=根号2-2 先化简
(x-1)^3(x+1)(x-2)/(x+4)
(x+1)(x+2)(x+3)(x+4)+1
化简 (x+y)(x²-xy+y²) ; 3(2x-1)(x+6)-5(x-3)(x+6)
3x(x²+2x²+1)-x(x-2)(2x+4)=?