I have a problem finding the standard form for this equation:

9x^{2 }+ 25y^{2 }- 36x - 50y + 61 = 0

I got stuck at this part.

9(x-2)^{2}+ 25(y-1)^{2 }= 0

What should I do next to make equal to 1 instead of 0? I've never seen problem like this before.

what will the graph look like?