@洒龙煜(2x+y-3)²(2x+y-3)(2x+y+3)[(x+y)²-(2xy)²]÷
2x²-3xy=y²=0(x,y不得o)求x/y+y/x
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
3x²y+xy²-[2xy²-4x²y+(x²y-2xy²)
化简求值[1-(2x/x+y)]÷ (x²-2xy+y²/3x+3y)+(x²+xy/x&
计算3x/8y×16y²/27x² (2xy-x²)÷x-2y/xy 2x-6/x
因式分解 (3x+2y)-(x-y)² x²-xy+3y-3x 2x²+xy-y²
@洒龙煜(2x+y-3)²(2x+y-3)(2x+y+3)[(x+y)²-(2xy)²]÷
(2x²y-2xy²)-[(-3x²y²+3x²y)+(3x²
化简 (x+y)(x²-xy+y²) ; 3(2x-1)(x+6)-5(x-3)(x+6)
计算(1)3x/8y×16y²/27x² (2)(2xy-x²)÷x-2y/xy 2x-6
计算 2xy[4x²y²-3y(xy+x²y)-xy²]
-2y³+(3xy²-x²y)-2(xy²-y³)