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

Toán Lớp 6: Tính : 3 mũ 6 : 3 mũ 2 + 2 mũ 3 . 2 mũ 2 – 3 mũ 3 . 3 nhnah 3 phút

Toán Lớp 6: Tính :
3 mũ 6 : 3 mũ 2 + 2 mũ 3 . 2 mũ 2 – 3 mũ 3 . 3
nhnah 3 phút

Comments ( 2 )

  1. Ta có:
    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
    =81+32-81
    =32
     

  2. 3^6 : 3^2 + 2^3 . 2^2 – 3^3 . 3
    = 3^4 + 2^5 – 3^4
    = (3^4 – 3^4) + 2^5
    = 0 + 2^5
    = 32
     

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