二项式定理是高考中的必考内容,主要是考查运用二项式定理的通项T_(r+1)=C_n~ra_(n-r)b~r求解有关展开式中某项的“四数”(次数,项数,系数,参数)问题。因此,抓住通项就抓住了二项式定理的命脉。其次是二项式系数的性质,注意运用性质来解题。下面将2012年全国及各省市高考数学卷中有关二项式定理的考题作一归纳,并分类解析此类问题。一、求展开式中的常数项求展开式中的常数项,就是运用通 The binomial theorem is the compulsory part of the college entrance examination, which is to examine the general term T_ (r + 1) = C_n ~ ra_ (nr) b ~ r using the binomial theorem. Number of "(number of times, number of items, coefficient, parameter) problem. Therefore, grasping the general term captures the lifeblood of the binomial theorem. Followed by the nature of the binomial coefficient, pay attention to the nature of the problem-solving. The following 2012 will be the national and provincial provinces entrance math essay on the theorem of binomial induction for a induction, and classification analysis of such issues. First, find the expansion of the constant terms Expansion of the constant terms, is the use of pass