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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: Tìm ưcln rồi tìm ưc 32 và 64 171,1

Toán Lớp 6: Tìm ưcln rồi tìm ưc
32 và 64
171,1

Comments ( 2 )

  1. $UCLN ( 32;64) = 32 $( vì 64 ⫶ cho 32 ) 
    $→ ƯC ( 32;64) = Ư ( 32 ) = { 1;2;4;8;16;32} $
    $UCLN ( 171;1) = 1 $( vì 171 ⫶ cho 1 ) 
    $→ ƯC ( 171;1) = Ư ( 1 ) = { 1}$
     

  2. $\text{Ta có:32=$2^5$}$
    $\text{64=$2^6$}$
    $\text{⇒ƯCLN(32,64)=$2^5$=32}$
    $\text{⇒ƯC(32,64)=Ư(32)={1,2,4,8,16,32} }$
    $\text{Ta có:171 = $3^2$ . 19}$
    $\text{1 = 1}$
    $\text{⇒ƯCLN(171,1) = 1}$
    $\text{⇒ƯC(171,1) = Ư(1) = 1}$

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222-9+11+12:2*14+14 = ? ( )

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