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

Toán Lớp 6: 3 mủ 6 : 3 mủ 2 + 2 mủ 3 . 2 mủ 2 – 3 mủ 3 . 3 tính nhanh nếu có thể

Toán Lớp 6: 3 mủ 6 : 3 mủ 2 + 2 mủ 3 . 2 mủ 2 – 3 mủ 3 . 3
tính nhanh nếu có thể

Comments ( 2 )

  1. 3^6 : 3^2 + 2^3 . 2^2 – 3^3 . 3
    = 3^(6-2) + 2^(3+2) – 3^(3+1)
    = 3^4 + 2^5 – 3^4
    = 2^5 = 32
     

  2. $\text{$3^{6}$ : $3^{2}$ + $2^{3}$ . $2^{2}$ – $3^{3}$ . 3}$
    $\text{= $3^{4}$ + $2^{5}$ – $3^{4}$ }$
    $\text{= $2^{5}$  = 32}$
    $\text{Áp dụng: $a^{n}$ . $a^{m}$ = $a^{m + n}$ }$
    $\text{Áp dụng: $a^{n}$ : $a^{m}$  = $a^{m – n}$ }$
     

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