Mathematics
Senior High
この問題の解き方を教えてください
次の連立方程式を解け。
[x=y=3
\x² + y² = 9
(1)
(2)
[x² + y²-2x+2y = 3
\x² + y² = 4x+4y = 1
(3)
(4)
[(x−y)(x+2y)
= 0
\x²2xy +4y² = 12
[√x+y=5
x³+y³ = 35
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