6a²+7ab+2b²分解因式(十字相乘?)并说明理由
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![6a²+7ab+2b²分解因式(十字相乘?)并说明理由](/uploads/image/z/7175915-35-5.jpg?t=6a%26%23178%3B%2B7ab%2B2b%26%23178%3B%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%EF%BC%88%E5%8D%81%E5%AD%97%E7%9B%B8%E4%B9%98%3F%EF%BC%89%E5%B9%B6%E8%AF%B4%E6%98%8E%E7%90%86%E7%94%B1)
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6a²+7ab+2b²分解因式(十字相乘?)并说明理由
6a²+7ab+2b²分解因式(十字相乘?)并说明理由
6a²+7ab+2b²分解因式(十字相乘?)并说明理由
(2a+b)(3a+2b)
6a²+7ab+2b²
=(3a+b)(a+2b)
3a b
a 2b
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6ab+ab=7ab