x+80%y=42 y-x=12

x+80%y=42 y-x=12 (x*x+y*y)(x*x+y*y)-(x*x+y*y)=12 求x*x+y*y等于多少 Y-X=45 (80%Y-X)×8=(Y-35-X)×12 已知实数x,y满足|x|+x+y=10、x+|y|-y=12,则x+y的值? X.Y为自然数,X(X-Y)-Y(Y-X)=12,求X.Y的值 x,y都是自然数,且x(x-y)-y(y-x)=12,求x+y-xy的值 二元函数f(x,y)=x+y/x-y,求f(y/x,x/y) [x(x-y)-y(x-y)+(x+y)(x-y)]÷2x其中x=2012 y=2013 ) y=cos(x-y) x+y=5; x^y+y^x=17 >>> x =input("x:") x:34 >>> y =input("y:") y:42 >>> print x 因式分解下列式子：x(x-y)+y(y-x)=?