Mathematics
Junior High
Solved
私は39になったのですが、答えは33です。
解き方を教えて下さい🙇
(3)x + y = 6,xy = 3のとき, x2 +xy+y2の値を求めなさい。
〃
(x+y)²+xy
=62+3
=36+3
=39
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ありがとうございます！