(x^2-xy+0.25x^2)/4x^2-y^2

-3(2x^2-xy)+4(x^2+xy-6) （-3x^y+2xy)-( )=4x^+xy 4(x²+xy-6)-3(2x²-xy) -3(2x²-xy)+4(x²+xy-6) xy^2-4x 因式分解 化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy] (x^2+2xy+y^2-4xy)*(x^2-2xy+y^2+4xy) 因式分解2x^-xy (x^-4y^)/(x^+2xy+y^)/(x+2y)/(2x^+2xy) (4x^2+5xy-7x)-(5x^2y+4xy+x) 因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) 因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6 3xy(x^2-xy^2+xy)-xy^2(2x^2-xy+2x) x-y/x^2+xy除以xy-x^2/x^2y^2-x^4*1/x-y 2x(x-y)+4xy(y-x) 因式分解2x(x-y)+4xy(y-x) 因式分解 （x^2+xy/x-y)/（xy/x-y)计算 计算x²-x/x²×x/1-x和x²-4y²/x²+2xy+y²÷x+2y/x²+xy 整式乘法..1.3xy（x²y-xy²+xy）-xy²（2x²-xy+2x）2.（x-1）（x²-4x+3）-x（x²-5x+2)