34O8
34O8
05-06-2021
Mathematics
contestada
x²+y²=2
xy=1
x+y= ?
Respuesta :
jasongggg
jasongggg
05-06-2021
Answer:
2 or -2
Step-by-step explanation:
x²+y²=2
(x+y)²-2xy=2
(x+y)²=4
x+y=±2
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