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

Toán Lớp 6: [3^22.(3^8 : 3^3) + 2.3^27] : 3^26 nhanh nhé

Toán Lớp 6: [3^22.(3^8 : 3^3) + 2.3^27] : 3^26
nhanh nhé

Comments ( 2 )

  1. $\text{Giải đáp:}$
    $[ 3^{22}. ( 3^8 : 3^3 ) + 2.3^{27} ] :3^{26}$
    $= [ 3^{22} . 3^5+ 2.3^{27} ] : 3^{26}$
    $= [3^{27} . 2.3^{27} ] : 3^{26}$
    $= [3^{27}. (1 + 2) ] :3^{26}$
    $= [3^{27}. 3 ] : 3^{26}$
    $= 3^{28} : 3^{26}$
    $=$ $3^{28-26}$ 
    $= 3^2$
    $⇒ 9.$
     

  2. Giải đáp:
     9
    Lời giải và giải thích chi tiết:
    [3^22.(3^8 : 3^3) + 2.3^27] : 3^26
    = [3^22.3^5 + 2.3^27] : 3^26
    = [3^27 + 2.3^27] : 3^26
    = [3^27.1 + 2.3^27] : 3^26
    = 3^27(1+2) : 3^26
    = 3^27.3 : 3^26
    = 3^28 : 3^26
    = 3^2
    = 9 

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

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