初級編 (x+8)(x-2) 2 = x +6x-16 2 (x+7) 2 = x +14x+49 2 (x-4) 2 = x -8x+16 (x+2)(x-2) 2 = x -4 (x-4)(x-9) 2 = x -13x+36 (x-6)(x+9) 2 = x +3x-54 2 (x+1) 2 = x +2x+1 2 (x-5) 2 = x -10x+25 (x+9)(x-9) 2 = x -81 (x-1)(x+2) 2 = x +xー2 2 (x+10) 2 = x +20x+100 2 (x-2) 2 = x -4x+4 (x-10)(x+10) 2 = x -100 (x+1)(x-9) 2 = x -8x-9 (x+10)(x-2) 2 = x +8x-20 (x-4)(x-10) 2 = x -14x+40 2 (x+9) 2 = x +18x+81 2 (x-3) 2 = x -6x+9 (x+5)(x-5) 2 = x -25 つづく・・・ 修行はまだ続く!
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