十字相乘 y^2-3y-18; 2x^2-x-1; 6x^2+7x+2; 6y^2-11y-10; 6x^2+x-15;
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十字相乘 y^2-3y-18; 2x^2-x-1; 6x^2+7x+2; 6y^2-11y-10; 6x^2+x-15; 3a^2-8a+4; 5x^2+7x-6
![十字相乘 y^2-3y-18; 2x^2-x-1; 6x^2+7x+2; 6y^2-11y-10; 6x^2+x-15;](/uploads/image/z/5224744-64-4.jpg?t=%E5%8D%81%E5%AD%97%E7%9B%B8%E4%B9%98+y%5E2-3y-18%EF%BC%9B+2x%5E2-x-1%3B+6x%5E2%2B7x%2B2%3B+6y%5E2-11y-10%3B+6x%5E2%2Bx-15%3B)
(Y-6)(Y+3)=0
(2x+1)(X-1)=0
(2x-1)(3x+2)=0
(2y-5)(3y+2)=0
(2X-3)(3X+5)=0
(3a-2)(a-2)=0
(x-2)(5x+3)=0
(2x+1)(X-1)=0
(2x-1)(3x+2)=0
(2y-5)(3y+2)=0
(2X-3)(3X+5)=0
(3a-2)(a-2)=0
(x-2)(5x+3)=0
十字相乘 y^2-3y-18; 2x^2-x-1; 6x^2+7x+2; 6y^2-11y-10; 6x^2+x-15;
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