计算,一道数学题看图

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计算,一道数学题看图计算,一道数学题看图计算,一道数学题看图=1/(x+1)-1/(x+2)+1/(x+2)-1/(x+3)+1/(x+3)-1/(x+4)=1/(x+1)-1/(x+4)=3/(x+

计算,一道数学题看图
计算,一道数学题看图

计算,一道数学题看图

=1/(x+1)-1/(x+2)+1/(x+2)-1/(x+3)+1/(x+3)-1/(x+4)

=1/(x+1)-1/(x+4)
=3/(x+1)(x+4)