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

Toán Lớp 7: 2^15.9^4/6^6.8^3 giúp mình với

Toán Lớp 7: 2^15.9^4/6^6.8^3
giúp mình với

Comments ( 2 )

  1.    (2^15 . 9^4) /(6^6 . 8^3)
    = [2^15 . (3^2)^4]/(2^6 . 3^6 . 2^9)
    = (2^15 . 3^8)/(2^6 . 3^6 . 2^9)
    = 3^2
    = 9

  2. $\dfrac{2^{15}.9^{4}}{6^{6}.8^{3}}$
    =$\dfrac{2^{15}.3^{8}}{3^{6}.2^{6}.2^{9}}$
    =$\dfrac{2^{15}.3^{8}}{3^{6}.2^{15}}$
    =$\dfrac{2^{15}.3^{6}.3^{2}}{3^{6}.2^{15}}$
    =3^2
    =9

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

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