(3x)²-(2x+1)(3x-2)=3(x+2)(x-2)
计算题:3x(x²-3x+2)-x²(3x-1)
计算 2(x²-x+1)-(-2x+3x²)+(1-x)
F(x)=3x²+2x-1
1.(3x²+2x-8)²-(x²-2x-8)²
(x²-5x+6分之x²-3x+2)²/(x²-2x-3分之x-1)²
2x²+7x+1=0 x(x-1)=3x+7
计算:5x²-[3x-(4x-3x)-2x²]
用换元法解这道方程2x/3 = (x²/12)+(3/x²) +(4/x)
计算:3x²-[5x-(1/2x-3)+2x²]
3x+(根号下x²-3x)+2=x²怎么解方程
(2x²-3x+1)²-22x+33x-1怎么做?
因式分解:(x²+4x+8)²+3x(x²+4x+8)+2x² x²(