Solve for x and y: x+4y=27xy and x-2y=21xy.

2. Solve for x and y: x^2018*y^2017 =1/2 and x^2016*y^2019 =8.find x^2 +y^2.
3.find the factor of x^3-x^2y-xy^2+y^3.

2. X^2+y^2=33/4

3.(x-y)(x+y)(x-y).

enough with the drive-by problems already!