Mathematics
Junior High
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(8)と(9)の問題の解き方を教えてください🙇‍♂️

式の計算 因数分解

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✨ Best Answer ✨

いかがでしょうか?

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{a+(b−3)}の所がなぜ、a+になるのか分かりません🙇‍♂️

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ありがとうございます🙇‍♂️

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