Circle

Why can’t get a full circle using CG (TI-84 Plus) for the following equation?

(x-3)² + (y+2)² = 25

(y+2)² = 25 - (x-3)²

y = ±√[25 - (x-3)²] – 2

Y1 = √[25 - (x-3)²] – 2

Y2 = -Y1 - 4

Thanks.

pls use conics app