内容正文:
第三节 十字相乘法和分组分解法
例1:分解因式:
(1)
=______________________;
(2)
=_________________________;
(3)
=__________________________;
(4)
=___________________________;
(5)
=___________________________;
(6)
=_____________________________;
例2:分解因式:
(1)
________________________;
(2)
____________________________;
(3)
________________________________;
例3:分解因式:
(1)
_______________________________;
(2)
_________________________________;
(3)
___________________________;
练习:
把下列多项式分解因式:
(1)
_______________________________;
(2)
_______________________________;
(3)
________________________________;
(4)
_______________________________;
(5)
_____________________________________;
(6)__________________________________;
(7)
_____________________________;
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