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

Toán Lớp 7: 9^x . 81^x = 3^6144 Giúp mình nha mình đang gấp.

Toán Lớp 7: 9^x . 81^x = 3^6144
Giúp mình nha mình đang gấp.

Comments ( 2 )

  1. 9^{x} . 81^{x} = 3^{6144}
    => 3^{2x} . 3^{4x} = 3^{6144}
    => 2x + 4x = 6144
    => 6x = 6144
    => x = 6144 : 6
    => x = 1024

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

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