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

Toán Lớp 7: Tính giá trị biểu thức : `(2^30 . 5^7+2^13 . 5^27)/(2^27 . 5^7+2^10 . 5^27)`

Toán Lớp 7: Tính giá trị biểu thức : (2^30 . 5^7+2^13 . 5^27)/(2^27 . 5^7+2^10 . 5^27)

Comments ( 2 )

  1. $\text{Đặt}$ {2^{30} + 5^{7} + 2^{13} . 5^{27}}/{2^{27} . 5^{7} + 2^{10} . 5^{27}} $\text{là A}$
    A = {2^{13} . (2^{17} . 5^{17} + 5^{27})}/{2^{10} . (2^{17} . 5^{7} + 5^{27})} 
    A = 2^{13}/2^{10} 
    A = 2^{13} : 2^{10} 
    A = 2^{13-10} 
    A = 2^3 
    A = 8 
    $\text{Vậy}$ A = 8 

  2. (2^30. 5^7+2^13. 5^27)/(2^27. 5^7+2^10. 5^27)
    =(2^13.(2^17. 5^7+5^27))/(2^10.(2^17. 5^7+5^27))
    =2^13/2^10
    =2^3=8

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

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