Precalculus
x2+y2=289x^2+y^2=289x2+y2=289
x2+y2=17x^2+y^2=17x2+y2=17
x2−y2=289x^2-y^2=289x2−y2=289
x2−y2=17x^2-y^2=17x2−y2=17