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

Toán Lớp 6: Bài 1 $4^{10}$ * $8^{5}$ $4^{15}$ *$5^{30}$ $27^{16}$ * $9^{10}$ Bài 2 $72^{3}$ *$54^{2}$ phần $2^{8}$ *$10^{4}$

Toán Lớp 6: Bài 1
$4^{10}$ * $8^{5}$
$4^{15}$ *$5^{30}$
$27^{16}$ * $9^{10}$
Bài 2
$72^{3}$ *$54^{2}$ phần $2^{8}$ *$10^{4}$

Comments ( 2 )

  1. Bài 1:
    4^10 . 8^5
    = 2^20 . 2^15
    = 2^35
    4^15 . 5^30
    = 2^30 . 5^30
    = (2.5)^30
    = 10^30
    27^16 . 9^10
    = 3^48 . 3^20
    = 3^68
    Bài 2: 
    (72^3 . 54^2)/(2^8 . 10^4)
    = (2^9 . 3^6 . 2^2 . 3^6)/(2^8 . 2^4 . 5^4)
    = (2^11 . 3^12)/(2^12 . 5^4)
    = (1 . 3^12)/(2 . 5^4)
    = (3^12)/(2 . 5^4)
    (Chúc bạn học tốt)
     

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