已知2x-y=8求[(x^2+y^2)-(x^2-y^2)+2y(x-y)]除以4的值
已知2x-y除以x+y等于2,求代数式(4x-2y除以x+y)-(4x+4y除以2x-y)的值
已知x-2y=2016,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除以8x的值
已知x-y除以x+y=3,求代数式x+y分之2(x-y)-3(x-y)分之x+y的值.
已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值?
已知2x-y=8求[(x^2+y^2)-(x^2-y^2)+2y(x-y)]除以4的值
已知x-y除以x+2y等于三分之一,求x-2y除以x+y的值
已知x+y/y=11/8,求x-y/x+2y的值.
{(z+y)(x-y)-(x-y)的2次方+2y(x-y)}除以4y
如果2x-y=8,求代数式[(x^2+y^2)-(x-y)^2+2y(x-y)]除以(4y)的值.
已知2x-y/x+3y=2,求代数式4x-2y/x+3y减4x+12y除以2x-y
已知:2X-Y等于2010,求式子((X^2+Y^2)-(X-Y)^2+2Y(X-Y))除以4Y的值.
已知 2x-y=10,求【(x^2+y^2(-(x-y)^2+2y(x-y)】除以y的值