问题描述： 初二因式分解难题 1个回答 分类：数学 2014-10-31 问题解答： 我来补答 1/x(x+1) +1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+3)(x+4)+1/(x+4)(x+5)=5/(x²+11x-708)1/x-1/(x+1)+1/(x+1)-1/(x+2)+1/(x+2)-1/(x+3)+1/(x+3)-1/(x+4)+1/(x+4)-1/(x+5)=5/(x²+11x-708)1/x-1/(x+5)=5/(x²+11x-708)(x+5-x)/x(x+5)=5/(x²+11x-708)x(x+5)=x²+11x-708-6x=-708x=118 展开全文阅读
