Please Help Thanks ~ xy^2 - x^3/2x^2 - 9xy + 7y^2?

Question

Help would be great...

Answer 1

x(y^2-x^2)/(2x-y)(2x-7y)

=x(y+x)(y-x)/(2x-y)(2x-7y)

Answer 2

f (x,y) = (xy^2 - x^3)/(2x^2 - 9xy + 7y^2) can be simplified as

f (x,y) = -x ( x + y ) / ( 2x - 7y )

Solving f (x,y) = 0 it will give

x = 0 and x = - y

Answer 3

What are the instructions saying that you need to do with this?  Simplify?  Solve?  You must be specific in order for anyone to help you.