Hi. Can you tell me what to do next.

I got that dy/dx=-72x/50y

Solve the equation explicitly foryand differentiate to getdy/dxin terms ofx.(Consider only the first and second quadrants for this part.)

36x2 + 25y2 = 900

I think next it would be

then square root everything and

and

what's next? did i do something wrong?

thanks