(-3x³y²)x(3x²y-2xy²)的过程和结果谢谢~
2x(-3xy)²*(-x²y)的三次方的结果为
已知xy=6,则(2x+3y)²-(2x-3y)²=?求过程、脱式计算的过程或者思路、谢谢
(x-y)/(2x+2y)与(xy)/(x+y)²通分要过程
[x(x²y²-xy)-y(x²-x³y)]÷3x²y
因式分解:[x(x²y²-xy)-y(x²-x³y)]÷3x²y
计算:(-7x²y)(2x²y-3xy³+xy)
3x²y+xy²-[2xy²-4x²y+(x²y-2xy²)
3y/2x+2y + 2xy/x²+xy等于多少过程
-2y³+(3xy²-x²y)-2(xy²-y³)
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
2x²-3xy=y²=0(x,y不得o)求x/y+y/x
计算(2x³-3x²y-2xy²)-(x³-2xy²+y³)