Mathematics
Senior High
3つになると分からなくなります。どのように解くのですか?
練習 43 次の展開式において [] の項の係数を求めよ.
(1)(x+y-z) 10
[xky323]
(2)
(2 ² + 1 + ²/² ) ³ [ ²1 ]
[]
I
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