计算:(1)2x²+1=3x (2)(x-3)(2x+1)=-5
计算 x(x+3)-(x-1)(x-2)
计算5x(2x² -3x+1)
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
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)=
计算 ∫(x^4-2x^3+x^2+1)/x(x-1)² dx
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
(x+2分之x+3)-(x+1分之x+2)=(x+4分之x+5)-(x+3分之x+4) 计算x+3分之2x+9-x-3分
F(X)=2X^3+6X^2-8X计算:(1)F(X)•(-2X);(2)2F(X)-4X
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)