(-x^2y)^3/(xy)^3*(-2x^3y^2)^3-(5x^2y+4xy^2+xy)/xy先求值在化简：（x^5+3x^3)/x^3-(x+1)^2,其中x=-1/2

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(-x^2y)^3/(xy)^3*(-2x^3y^2)^3-(5x^2y+4xy^2+xy)/xy先求值在化简：（x^5+3x^3)/x^3-(x+1)^2,其中x=-1/2
(-x^2y)^3/(xy)^3*(-2x^3y^2)^3
-(5x^2y+4xy^2+xy)/xy
先求值在化简：（x^5+3x^3)/x^3-(x+1)^2,其中x=-1/2

(-x^2y)^3/(xy)^3*(-2x^3y^2)^3-(5x^2y+4xy^2+xy)/xy先求值在化简：（x^5+3x^3)/x^3-(x+1)^2,其中x=-1/2
(-x^2y)^3/(xy)^3*(-2x^3y^2)^3
=-x^6y^3/x^3y^3×(-8x^9y^6)
=8x^12y^6

-(5x^2y+4xy^2+xy)/xy
=-5x-4y-1

先求值在化简：（x^5+3x^3)/x^3-(x+1)^2,其中x=-1/2
（x^5+3x^3)/x^3-(x+1)^2,
=x²+3-x²-2x-1
=-2x+2
当x=-1/2时
原式=1+2=3

2x²y-3(2xy-xy)-xy x^2-xy-6y^2+3xy+y+2 因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) X^Y-2XY^2+y^3 化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy] xy-2{xy-[3x^2y-(4xy^2+0.5xy)]+4x^2y}+6xy^2 （X-3xy+4xy-y）-[-2x-2（xy-3/2xy）-y]+6xy的过程计算：3xy[2xy-x（y-2）+x] 计算3xy[2xy-x(y-2)+x-1] （-3x^y+2xy)-( )=4x^+xy x*x+xy=3,xy+y*y=2,则x*x+2xy+y*y=________? (x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)答案应为-2x-x*x-3x，因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6 3xy(x^2y-xy^2+xy)-xy^2(2x^2-6xy+2x)过程 x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2 5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2) 计算：3xy(x²y-xy²+xy)-xy²(2x-xy+2x） (-1/3xy)^2•[xy(2x-y)-2x(xy-y^2)]