阅读理解，分解因式：x2-120x+3456 分析：由于常数项数值较大，则采用x

发布时间：2017-05-08 14:04 │ 来源：www.tikuol.com

题型：解答题

阅读理解，分解因式：x²-120x+3456

分析：由于常数项数值较大，则采用x²-120x变为差的平方的形式进行分解，这样简便易行：x²-120x+3456=x²-2×60x+3600-3600+3456=（x-60）²-144=（x-60+12）（x-60-12）=（x-48）（x-72）．

请仿照上面的方法分解因式：x²+100x+2275．

选择正确的答案。
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