Mathematics
Junior High
Solved
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【5】 次の式を展開せよ.
(1) (2x + 3y) (x − 3y) - (2x - y) (x−y) (2) (x + 2)² + (x + 1) (x − 5)-) (¹)
(3) (a + 4) (a − 4) - (a + 2)(a − 3)
(4) (3x − y)² – (x + 2y) (x − 3y)
Answers
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ありがとうございます!