Question

Rút gọn  ta được =

Answer 1

A =2.6.10+6.10.14+10.14.18+...+194.198.202/1.3.5+3.5.7+5.7.9+7.9.11+...+97.99.101

   =2.2.2(1.3.5)+2.2.2(3.5.7)+2.2.2(5.7.9)+...+2.2.2(97.99.101)/1.3.5+3.5.7+5.7.9+...+97.99.101

  =2.2.2/1

  =2^3/1

  =8/1

  =8 

Answer 2

Fan Nguyên phải hong =)) Mình cv nè =)))