Question

find the centre and radius of the circle x^2 +y^2 + 8x+10y - 8 = 0​

Answer 1

Step-by-step explanation:

x^2 + 8x + 16 + y^2 +10y + 25 -8-16-25 = 0

(X+4) ^2 + ( y+5) ^2 = 49 = 7^2

so the centre is ( -4,-5) and radius is 7

by using formula ( x-a) ^2+ (y-b)^2 = r^2

Answer 2

Answer:

the centre of the circle is ( -4 -5) and the radius of circle is 7