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

Toán Lớp 7: thực hiện phép tính 2^4 × 2^6/ (2^5)^2 – 2^5 × 15^3/ 6^3 x 10^2

Toán Lớp 7: thực hiện phép tính
2^4 × 2^6/ (2^5)^2 – 2^5 × 15^3/ 6^3 x 10^2

Comments ( 2 )

  1. (2^4 . 2^6 )/( (2^5)^2 ) – ( 2^5 . 15^3 )/( 6^3 . 10^2 )
    = ( 2^10 )/( 2^10 ) – ( 2^5 . 3^3 . 5^3 )/( 2^3 . 2^2 . 3^3 . 5^2 )
    = 1 – ( 2^5 . 3^3 . 5^3 )/( 2^5 . 3^3 . 5^2 )
    = 1 – 5
    = -4

  2. Lời giải và giải thích chi tiết:
    (2^4 . 2^6 )/( (2^5)^2 ) – ( 2^5 . 15^3 )/( 6^3 . 10^2 )
    = ( 2^10 )/( 2^10 ) – ( 2^5 . 3^3 . 5^3 )/( 2^3 . 2^2 . 3^3 . 5^2 )
    = 1 – ( 2^5 . 3^3 . 5^3 )/( 2^5 . 3^3 . 5^2 )
    = 1 – 5
    = -4

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