Mathematics
Junior High
Solved
(2)の解き方が分かりません。教えてください！
5 a+b=4, ab=2のとき, 次の式の値を求めよ。
□ (1) '+6°
□(4) ab+ab
□(2)
²-3ab+b2
(5) a³b+ab³
(3) (a-b)²
1
☐ (6)
1
+-
a b
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