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

Toán Lớp 7: $\frac{2^{6}$ .9}{6^{4}$ .8}$ mn giup mn

Toán Lớp 7: $\frac{2^{6}$ .9}{6^{4}$ .8}$
mn giup mn

Comments ( 2 )

  1. (2^{6}.9)/(6^{4}.8)
    =(2^{6}.3^2)/(2^{4}.3^{4}.2^3)
    =(2^{6}.3^2)/(2^{7}.3^4)
    =(1)/(2.3^2)
    =(1)/(2.9)
    =1/(18)

  2. (2^6 . 9)/(6^4 . 8)
    = (2^6 . 3^2)/((2 . 3)^4 . 2^3)
    = (2^6 . 3^2)/((2^4 . 3^4 . 2^3)
    = (2^6 . 3^2)/((3^4 . 2^7)
    = (1 . 1)/(3^2 . 2^1)
    = 1/(9 . 2)
    = 1/18

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

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