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

Toán Lớp 6: 7 mũ 2 -(x+3)=45 4 mũ 3 + 4 mũ 2

Toán Lớp 6: 7 mũ 2 -(x+3)=45
4 mũ 3 + 4 mũ 2

Comments ( 2 )

  1. 7^2 – (x+3) = 45
    ⇔ 49 – (x+3) = 45
    ⇔ – (x+3) = -4
    ⇔ x + 3 = 4
    ⇔ x = 1
    b) 4^3 + 4^2 = 64 + 16 = 80

  2. Giải đáp:
    7^2 – ( x +3) = 45
    49 – ( x +3) = 45
    x+3= 49 – 45
    x+ 3= 4
    x= 1
    Vậy x= 1
    4^3 + 4^2
    = 64 + 16
    = 80

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