Mathematics
Senior High
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4
4
@a²ª + b ² + cª
分かっていること~
a + b + c = 1
ab + bc + ca = -2
abc = -1
a²+ b ² + c ² = 5
3
a³ + b³ + c³ = 4
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こうなったんですけど、どうやったら13になりますか?