化简.x＾2-3xy／x＾2－6xy+9y＾2

化简.x＾2-3xy／x＾2－6xy+9y＾2 (x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)答案应为-2x-x*x-3x， 化简:xy分之3x^2+2xy-xy分之2x^2-xy= (9x^2y-6xy^2)/3xy 3xy(x^2y-xy^2+xy)-xy^2(2x^2-6xy+2x)过程 3xy(x^2-xy^2+xy)-xy^2(2x^2-xy+2x) 化简：x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y) 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 2x平方-3xy+(2xy-x平方)化简! -3(2x^2-xy)+4(x^2+xy-6) 4(x²+xy-6)-3(2x²-xy) -3(2x²-xy)+4(x²+xy-6) 化简(3x^2-5xy)+{-x^2-[-3xy+2(x^2-xy)+y^2]} 化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy] 化简（3X平方-5Xy)+{-X平方-[-3Xy+2(X平方-xy) 因式分解X^3-2xy+xy^2 ①(9x²y-6xy²)÷3xy ②(3x²y-xy²+2分之1xy)÷(-2分之1xy)