Question

(x - 8) 2 + (y + 2) 2 = 64.

Answer 1

xy=32

Explanation:

(2x - 16) + (2y + 4) = 64

(4xy - 64)=64

+64 +64

4xy = 128

4xy/4 = 128/4

xy = 32

Answer 2

x +y =24

Explanation:

(x - 8) 2 + (y + 2) 2 = 64

2x - 16 +2y+4 =64

2x + 2y =64-16

2x+2y = 48

divide both side with 2 we get

2x/2 +2y/2 =48/2

simplify

x + y =24

hence equation is x +y =24