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

Toán Lớp 6: 80 + 20² : [5 · 12 – 3(6 – 2)² + 28]

Toán Lớp 6: 80 + 20² : [5 · 12 – 3(6 – 2)² + 28]

Comments ( 2 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
    80 + 20² : [5 · 12 – 3(6 – 2)² + 28]
    = 80 + 400 : [60 – 3(4)^2 + 28]
    = 80 + 400 : [ 60 – 3.16 + 28]
    = 80 + 400 : [ 60 – 48 + 28 ]
    = 80 + 400 : (12+28)
    = 80 + 400 : 40
    = 80 + 10
    = 90

  2. $@Zeng$
    $80+20^2:[5.12-3(6-2)^2+28]$
    $=80+20^2:[60-3.4^2+28]$
    $=80+20^2:[60-3.16+28]$
    $=80+20^2:[60-48+28]$
    $=80+20^2:[12+28]$
    $=80+20^2:40$
    $=80+400:40$
    $=80+10$
    $=90$

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

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