Mathematics
Senior High
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この続きを教えてください。

| 議せ1 rce- (の) ィ22ヵと 箇 す 4 志が: + でてらィ 227: 226と ] (の ee 7 |
因数分解

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✨ Best Answer ✨

最後の行の真ん中のb^2+c^2を(b+c)^2-2bcにすればまたくくれるよ

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