计算:(x-1/2)(1-3/2x)²-x(2+x/4)²
计算 ∫(x^4-2x^3+x^2+1)/x(x-1)² dx
计算5x(2x² -3x+1)
计算:(1)x²/x-2 - 4x/x-2 + 4/x-2;
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
计算 x(x+3)-(x-1)(x-2)
计算(x²+4x-12/x²+x+1)(x²-1/x²-4x+4)(2-x/x&
2道分式计算[(x+4)(x-2)]/x³+2x²+x÷[(x-2)/x·(x+4)/(x+1)]2
计算:(1+1/x)·x²-2x+1/x²-1;(x²/x-1-2x/1-x)÷x/x-1
(x²-2x)分之(x+2)-(x²-4x+4)分之(x-1) 计算
x^2-1/x^2+4x+4÷(x+1)×x^2+3x+2/x-1计算
计算:(1)(4x-1)(x+4) (2)(-2x-1/2)(x-1) (3)(x-2)(x+3)-2x²
计算(1).(5x-2)(x-3)-(3x-1)(x-4)= (2).(x+3)(x²+9)(x-3)=