Question

If x+y = 12 and x−y = 8, what is the value of x2+y2? (A) 20 (B) 24 (C) 100 (D) 104 (E) 208

Answer 1

its 104

Explanation:

Answer 2

24

Explanation:

x-y=8

x=8+y

(8+y) +y =12

2y=4

y=2

x+2=12

x=10

y=2

x=10

10+2= 12

10-2 =8

10*2=20 2*2=4

20+4=24