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

Toán Lớp 7: Phân tích thành luỹ thừa số nguyên tố `9^2. 3^4. 3` `4^2. 2. 2^10` `5^1. 125^0. 125^1`

Toán Lớp 7: Phân tích thành luỹ thừa số nguyên tố
9^2. 3^4. 3
4^2. 2. 2^10
5^1. 125^0. 125^1

Comments ( 2 )

  1. a) 9² . $3^{4}$ , 3
    = (3²)² . ($3^{4}$ ) $^{1}$ 
    = $3^{4}$  . $3^{5}$ 
    =($3^{4}$ )$^{5}$ 
    =$3^{9}$ 
    b) $4^{2}$ . 2 . $2^{10}$ 
    = ($2^{2}$ )$^{2}$ . ($2^{10}$)$^{1}$ 
    =$2^{4}$ . $2^{11}$ 
    = ($2^{4}$ )$^{11}$ 
    = $2^{15}$ 
    c) $5^{1}$ . $125^{0}$ . $125^{1}$ 
    = 5 . 1 . 125
    = 5 . 125 
    = 5 . $5^{3}$ 
    = ($5^{1}$) $^{3}$ 
    = $5^{4}$ 

  2. a)
    9^2 . 3^4 . 3
    = (3^2)^2 . 3^4 . 3
    = 3^4 . 3^4 . 3
    = 3^9
    b)
    4^2 . 2 . 2^10
    = (2^2)^2 . 2 . 2^10
    =  2^4 . 2 . 2^10
    = 2^15
    c)
    5^1 . 125^0 . 125^1
    = 5 . 1 . 125
    = 5 . 125
    = 5 . 5^3
    = 5^4
     

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