(2x^3y)^2×(-2xy)+(-2x^3y)^3÷(2x^2)
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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^2-xy/xy-y^2约分
(x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)答案应为-2x-x*x-3x,
(x^2+xy/x-y)/(xy/x-y)计算
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
(-1/3xy)^2•[xy(2x-y)-2x(xy-y^2)]
计算题 xy【y^2+x^2】-y^2【xy+2x】-3xy