I don't understand what you want solved for here...could you please tell me?
Answer:
On the right is a circle with centre (0, 0), radius r and (x, y) any point on the circle. Distance between (0,0) and (x, y) equals the radius, r. If the centre is (0, 0), the equation of the circle will be of the form x2 + y2 = r2.
Always will be your answer ;D
2x^2 is not a like term in the given expression (since the given like terms contain only 1 power of x)
