Mathematics
Senior High
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17 2次関数y=x-4x+7のグラフと直線y=2x+kが接するとき, kの値を求めよ.また,そのと
きの接点の座標を求めよ.
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解き方を教えてください
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途中式計算間違えちゃいました
答え自体はあってます
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