What expressions are equivalent to 22c+33d ?

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Find two consexutive odd integers such that the sum of their square is 650