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
1 answer:
Answer:
24
Step-by-step 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
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