用分解因式方法作2012²-2011²+2010²-2009²+···+2²-1²,求具体过程.
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用分解因式方法作2012²-2011²+2010²-2009²+···+2²-1²,求具体过程.
用分解因式方法作2012²-2011²+2010²-2009²+···+2²-1²,求具体过程.
用分解因式方法作2012²-2011²+2010²-2009²+···+2²-1²,求具体过程.
(2012+2011)(2012-2011)+(2010+2009)(2010-2009).+(2+1)(2-1)
你这道题有问题吧