Determine the center and radius of the following circle equation: x² + y2 + 2x – 2y – 62 = 0​

Step-by-step explanation:

x²+2x+y²-2y=62

using completing the square

x²+2x+1+y²-2y+1=62+1+1

(x+1)²+(y-1)²=64

(x+1)²+(y-1)²=8²

(x-a)²+(y-b)²=r²

by comparison

(a,b)=(-1,1)

a,b is the center of the circle

r=8unit

r is the radius

C. 115 pieces of candies divided equally between 5 friends is not equal to 21 each

Step-by-step explanation: 115 divided by 5 is 23 each and not 21.