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](/uploads/image/z/1995507-27-7.jpg?t=%E5%8D%81%E5%AD%97%E7%9B%B8%E4%B9%98%E6%B3%95+1.x%26%23178%3B-3xy%2B2y%26%23178%3B+2.x%26%23178%3B%2B4x%2B3+3.x%26%23178%3B-6x%2B5+4.x%26%23178%3B%2B5x-14+5.x%26%23178%3B-4x-21+6.x%26%23178%3B-3x-10+7.x%26%23178%3B-x-2+8.x%26%23178%3B-%281%2B%E2%88%9A3%29x%2B%E2%88%9A3)
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