Mathematics
Junior High
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なぜこうなるのかが分かりません
教えてください🙇‍♂️

14 (1) (4x+3)(z +7) 2 =4x1xx²+(4x7+3x1)x+3x7 = 4x²+31x+21

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✨ Best Answer ✨

これに代入してます。

平成21

ありがとうございます😭😭

user

おけ!!

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