2x³+3x²-2x-3=x²(2x+3)-(2x+3)=(x²-1)(2x+3)=(x+1)(x-1)(2x+3)2x²＋5x＋3=(2x+3)(x+1)1/﹙2x+3﹚+21/﹙2x³+3x²-2x-3﹚－3／﹙x²－1﹚－1／﹙2x²＋5x＋3﹚＝0((x²...