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

Toán Lớp 6: [(125)^3.7^5 – (175)^5: 5]: 2004^2005

Toán Lớp 6: [(125)^3.7^5 – (175)^5: 5]: 2004^2005

Comments ( 1 )

  1. Giải đáp:
     
    Lời giải và giải thích chi tiết:
    ( $153^{3}$  x $7^{5}$  – $175^{5}$ : 5 ) : $2004^{2005}$
    = [ (5^3)^3 x $7^{5}$  – ( 7×25 )^5 : 5 ] : $2004^{2005}$
    = [ $5^{9}$  x $7^{5}$  – $7^{5}$  x $25^{5}$ :5 ] : $2004^{2005}$
    = [ $5^{9}$  x $7^{5}$  – $7^{5}$  x (5^2)^5 : 5 ] : $2004^{2005}$
    = [ $5^{9}$  x $7^{5}$  – $7^{5}$  x [$5^{10}$ : 5 ] : $2004^{2005}$
    = [ $5^{9}$  x $7^{5}$  – $7^{5}$  x ($5^{10}$ : 5) ] : $2004^{2005}$
    = [ $5^{9}$ x $7^{5}$  – $7^{5}$  x $5^{9}$ ] : $2004^{2005}$
    = 0 : $2004^{2005}$
    = 0
    Xin 5* và CTLHN cho nhóm

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

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