计算(5x+2)(x-1)-(2x-3)²
计算5x(2x² -3x+1)
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 ∫(x^4-2x^3+x^2+1)/x(x-1)² dx
计算3x²-[5x-(1/2x-3)+2x²]
计算:3x²-[5x-(1/2 x-3)+2x²]
计算(-x³+2x²-5)(2x²-3x+1)
计算:-x+(2x-2)-(3x+5)
计算(1).(5x-2)(x-3)-(3x-1)(x-4)= (2).(x+3)(x²+9)(x-3)=
计算 (5x-2)(x-3)-(3x-1)(x-4)= (x+3)(x²+9)(x-3)=
x^2-1/x^2+4x+4÷(x+1)×x^2+3x+2/x-1计算
计算:(1+1/x)·x²-2x+1/x²-1;(x²/x-1-2x/1-x)÷x/x-1