Toán Lớp 6: a ) 1024:2^5 +140 :( 38 +2^)-7^23 :7^21 b )36.55 185.11 121.5

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1. Theo mình câu a) là 2^5

   a)1024:2^5+140:(38+2^5)-7^23:7^21

   =1024:32+140:(38+32)-7^2

   =32+140:70-49

   =32+2-49

   =34-49

   =-15

    

    

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