Mathematics
Senior High
この問題、まず展開ができなくてどなたか解説してください🙇♀️
→p.20,21
6. (x+y+2z)(2x+3y-z) (4x-y-3z) を展開したときの xyz の項の係数
を求めよ。
7 海の間に笑うト
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