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

Toán Lớp 7: 7^5 × 2^5 16^4 × 2^7 8^2 ÷ 49^3 (0.3)^3 × 70^3 (3/5)^4:9/25

Toán Lớp 7: 7^5 × 2^5
16^4 × 2^7
8^2 ÷ 49^3
(0.3)^3 × 70^3
(3/5)^4:9/25

Comments ( 2 )

  1. Giải đáp + Lời giải và giải thích chi tiết:
    7^5 .2^5=(7.2)^5=14^5
    16^4 .2^7=(2^4)^4 .2^7=2^16 .2^17=2^33
    8^2:49^3=(2^3)^2:(7^2)^3=2^6:7^6=(2:7)^6=(2/7)^6
    (0,3)^3 .70^3=(0,3.70)^3=21^3
    (3/5)^4:9/25=(3/5)^4:(3/5)^2=(3/5)^2
     

  2. Giải đáp+Lời giải và giải thích chi tiết:
    7^{5}xx2^{5}
    =(7xx2)^{5}
    =14^{5}
    16^{4}xx2^{7}
    =(2^{4})^{4}xx2^{7}
    =2^{16}xx2^{7}
    =2^{16+7}
    =2^{23}
    8^{2}\div 49^3
    =(2^{3})^2 \div (7^{2})^{3}
    =2^{6} \div 7^{6}
    =(2/7)^{6}
    (0,3)^{3} xx 70^{3}
    =(0,3 xx 70)^{3}
    =21^{3}
    (3/5)^{4}:9/25
    =(3/5)^{4}:(3/5)^{2}
    =(3/5)^{4-2}
    =(3/5)^2

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

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