Mathematics
Junior High
Resolved
教えて欲しいです🙏
(3) (a-b+c)(a+b-c) (
と
公式
R+プラス
2 次の計算をしなさい。
(1) (3a-1)(3a+5)-(a-4)²
(2) (x-5y)2(x+3y)(x-3y)
Answers
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