十字相乘法 1.x²-3xy+2y² 2.x²+4x+3 3.x²-6x+5 4.x²+5x-14 5.x²-4x-21 6.x²-3x-10 7.x²-x-2 8.x²-(1+√3)x+√3
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十字相乘法 1.x²-3xy+2y² 2.x²+4x+3 3.x²-6x+5 4.x²+5x-14 5.x²-4x-21 6.x²-3x-10 7.x²-x-2 8.x²-(1+√3)x+√3
十字相乘法 1.x²-3xy+2y² 2.x²+4x+3 3.x²-6x+5 4.x²+5x-14 5.x²-4x-21 6.x²-3x-10 7.x²-x-2 8.x²-(1+√3)x+√3
十字相乘法 1.x²-3xy+2y² 2.x²+4x+3 3.x²-6x+5 4.x²+5x-14 5.x²-4x-21 6.x²-3x-10 7.x²-x-2 8.x²-(1+√3)x+√3