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✨ Best Answer ✨

求める曲線を
y=2x²+mx+n とおくと
・x=0,y=−14を代入→n=−14・・①
・x=2,y=4を代入→8+2m+n=4・・②

①を②に代入
8+2m−14=4
2m=10
m=5

よって求める曲線は
y=2x²+5x−14

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