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almost 10 yearsago

解決済み

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almost 10 yearsago

①(4x-1)(x+3)
②(3x-4)(2x+3)
③(2x-1)の二乗

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almost 10 yearsago

①と②は「たすきがけ」で因数分解すると解けますよ。

③は解の公式に当てはめて解けます。

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