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y=ax^2にそれぞれ代入するだけですよ

⑴16= a × (-2)^2

⑵-9= a × (-3)^2

⑶10= a × (5)^2

あとはそれぞれa=◯の形にするだけで求められます

ゆい

めっちゃわかりやすいです!!すぐ理解できました!ありがとうございます😭

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