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- ax^2 + bx + c = 0 を解くための二次方程式の解の公式は: x = ____
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(-b ± sqrt(b^2 - 4ac)) / 2a- 半径rの円の面積は: A = ____
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π r^2- 半径rの円の円周は: C = ____
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2π r- 長さlと幅wの長方形の面積は: A = ____
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l × w- 底辺bと高さhの三角形の面積は: A = ____
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(1/2) b h- 平行な辺b1とb2、高さhの台形の面積は: A = ____
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(1/2)(b1 + b2)h- 長さl、幅w、高さhの直方体の体積は: V = ____
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l × w × h- 半径rと高さhの円柱の体積は: V = ____
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π r^2 h- 半径rの球の体積は: V = ____
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(4/3)π r^3- 半径rと高さhの円錐の体積は: V = ____
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(1/3)π r^2 h- 点(x1, y1)と(x2, y2)を通る直線の傾きは: m = ____
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(y2 - y1) / (x2 - x1)- 2点(x1, y1)と(x2, y2)の間の距離は: d = ____
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sqrt((x2 - x1)^2 + (y2 - y1)^2)- 直角三角形で、直角を挟む2辺がaとb、斜辺がcのとき、ピタゴラスの定理は: ____
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a^2 + b^2 = c^2- 端点が(x1, y1)と(x2, y2)である線分の中点は: M = ____
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((x1 + x2)/2, (y1 + y2)/2)- 初項a1、公差dの等差数列の第n項は: an = ____
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a1 + (n - 1)d
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