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

Toán Lớp 6: 25.8-15.5+160:16-10 phân tích nguyên tố 84 120 210 ra thừa số nguyên tố

Toán Lớp 6: 25.8-15.5+160:16-10 phân tích nguyên tố 84 120 210 ra thừa số nguyên tố

Comments ( 2 )

  1. 25 . 8 – 15 . 5 + 160 : 16 – 10
    = 200 – 75 + 10 – 10
    = 125 + 10 – 10
    = 125
    ______________________________
    84 = 2^2 . 3 . 7
    120 = 2^3 . 3 . 5
    210 = 2 . 3 . 5 . 7

  2. text{#Orca}
    25 . 8 – 15 . 5 + 160 : 16 – 10
    = 200 – 75 + 10 – 10
    = 125 + 10 – 10
    = 125
    ————
    84 = 2 . 2 . 3 . 7 = 2^2 . 3 . 7
    120 = 2 . 2 . 2 . 3 . 5 = 2^3 . 3 . 5
    210 = 2 . 2 . 3 . 7 = 2^2 . 3 . 7

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