Are there any intercepts?
y = x2 (it's x squared) (25 - x2 is under the square root)

Please try to use proper notation.

x^2*sqrt(25-x^2)?


x^{2}\sqrt{25-x^{2}}?

Or is it:

x^{2}(25-\sqrt{x^{2}})?

Intercepts will occur wherever each factor = 0. Your factors in this case are x^2 and sqrt(25 - x^2).