Question

A circle has the equation x2+y2+16y−30x=0.

Answer 1

Answer:

Step-by-step explanation:

hello :

x2+y2+16y−30x=0  means : (x²-30x)+(y²+16y) =0

(x²-30x+15²)-15²+(y²+16y+8²) -8²=0

(x-15)²-225+(y+8)²-64=0

(x-15)²+(y+8)²=289=17²......standard form when the center is (15,- 8)

and radius 17