How do I put these equations into standard form following the form of circles, ellipses and hyperbolic forms?

25x^2 + 25x^2 = 100

25x^2 - 4y^2 = 100

This should be the form EX.

x^2 y^2

------ + ------- = 1

36 9

Thanks =)

the x is supposed to be over the 36 and the y is supposed to be over the 9. Can't seem to figure how to do that