Mathematics
Senior High
Solved
（3）の問題がわからないです。
答えはx⁴+x²+1です。
解説お願いします！！
14 次の式を展開せよ。
(1) (a-b+c)(a-b-c)
(x²+x+1)(x²-x+1)
(3)
15W
(2) (x-2y+3)(x+2y-3)
(8-x)(8+
Answers
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