3x²-[5x-(1/2x-3)+2x²]怎样去括号?
3x²-[5x-(1/2x-3)+2x²]怎样去括号?
(x²-5x+6分之x²-3x+2)²/(x²-2x-3分之x-1)²
化简~(x²+3x+9/x²-27)+(6x/9x-x²)-(x-1/6+2x)
1/X²+3X+2 +1/X²+5X+6 +1/X²+7X+12 +1/X²+9
试说明不论X取何值代数式(x²+5x²+4x-1)-(-x²-3x+2x²-3)
分解因式(2X²-3X+1)²-22X²+33X-1
因式分解:(2x²-3x+1)²-22x²+33x-1
计算:(1).(-2xy²)*(3x²y)²
4x²-[2x-(x²-2x+3)-2(x²-3x)] 计算
1.(3x²+2x-8)²-(x²-2x-8)²
2(x²-1²)
去括号题 极其简单9-3(-2x+x²-x³)