Here h = –2, k = 3 and r = 4
The equation of circle is, (x–h)2+(y–k)2 = r2
∴ (x+2)2+(y–3)2 = (4)2 ⇒ x2 + 4 + 4x + y2 + 9 – 6y = 16
⇒ x2+y2 + 4x – 6y – 3 = 0