1.下列四个多项式,哪一个是2x^2+5x-3的因式?1.2x-1 2.2x-3 3.x-1 4.x-32.已知x^2+ax-12能分解成两个整系数的一次因式的乘积,则符合条件的整数a的个数是1.3个 2.4个 3.6个 4 8个 3.a,b,c为整数,a>b,a^2-ab-ac+bc=
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![1.下列四个多项式,哪一个是2x^2+5x-3的因式?1.2x-1 2.2x-3 3.x-1 4.x-32.已知x^2+ax-12能分解成两个整系数的一次因式的乘积,则符合条件的整数a的个数是1.3个 2.4个 3.6个 4 8个 3.a,b,c为整数,a>b,a^2-ab-ac+bc=](/uploads/image/z/2109854-38-4.jpg?t=1.%E4%B8%8B%E5%88%97%E5%9B%9B%E4%B8%AA%E5%A4%9A%E9%A1%B9%E5%BC%8F%2C%E5%93%AA%E4%B8%80%E4%B8%AA%E6%98%AF2x%5E2%2B5x-3%E7%9A%84%E5%9B%A0%E5%BC%8F%3F1.2x-1+2.2x-3+3.x-1+4.x-32.%E5%B7%B2%E7%9F%A5x%5E2%2Bax-12%E8%83%BD%E5%88%86%E8%A7%A3%E6%88%90%E4%B8%A4%E4%B8%AA%E6%95%B4%E7%B3%BB%E6%95%B0%E7%9A%84%E4%B8%80%E6%AC%A1%E5%9B%A0%E5%BC%8F%E7%9A%84%E4%B9%98%E7%A7%AF%2C%E5%88%99%E7%AC%A6%E5%90%88%E6%9D%A1%E4%BB%B6%E7%9A%84%E6%95%B4%E6%95%B0a%E7%9A%84%E4%B8%AA%E6%95%B0%E6%98%AF1.3%E4%B8%AA+2.4%E4%B8%AA+3.6%E4%B8%AA+4+8%E4%B8%AA+3.a%2Cb%2Cc%E4%B8%BA%E6%95%B4%E6%95%B0%2Ca%EF%BC%9Eb%2Ca%5E2-ab-ac%2Bbc%3D)
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