2x^3y+4x^2y+2xy2x^3 y+4x^2 y+2xy

2x^3y+4x^2y+2xy2x^3 y+4x^2 y+2xy 2X-5Y+8=3X+Y-5求XY2x-5y+8的绝对值+3x+y-5根号=0求实数x、y 因式分解：x3-2x3y+xy2X的3次方-2X的3次方乘Y+X乘Y2次方 计算2m/5n²p-3n/4mp²还有两题：3y/2x+2y+2xy/x²+xy2x/x²-64y²-1/x-8y就这三题，做起来有很多疑问。 计算下列各题(a+b/a-b)²*2a-2b/a+3b - a²/a²-b²÷a/b3y/2x+2y + x²+2xy/xy2x/x²+64y² + x+8y/x²+64y² 1、2a/5a^2b+3b/10ab^22、2m/5n^2p-2n/4mp^23/3y/2x+2y+2xy/x^2+xy2x/x^2-64y^2-1/x-8y错了，修改：1、2a/5a^2b+3b/10ab^22、2m/5n^2p-2n/4mp^23、3y/2x+2y+2xy/x^2+xy4、2x/x^2-64y^2-1/x-8y 【分解因式】m²-m 6+2a 3m²-12 2m²-2 a³+2a²b 5a-20【分解因式】m²-m6+2a3m²-122m²-2a³+2a²b5a-203x³+9x²x²-3x2x²-4xy2x-2y (x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)= (x+3y-4)(2x-y) 计算（2x-3y)(x+4y)-(3x+y)(x-2y)（2x-3y)(x+4y)-(3x+y)(x-2y) 因式分解(x-2y)(x-3y)+(x-4y)(x-5y)+（x-3y)(x-5y)+(x-2y)(x-4y) x²/xy-x/y 3x/4x+y - x-2y/4x+y (1-y/y+x)÷x/y²-x² x(x-y)2-(y-x)3 (2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y) [2/3x-2/x+y(x+y/3x-x-y)]/x-y/x 化简：{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x 计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x 化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x