Mathematics
Senior High
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〇で囲ったー2はどこからきたのですか?

6 7 / | したがって, 共有点の個数 9 ゅpー7の0 いしレレーーーー

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✨ Best Answer ✨

判別式D/4のb'には-4(k-2)を2で割った-2(k-2)がはいります

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