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

Toán Lớp 6: 600 : { 450 – [ ( 4 . 5 mũ 3 – 2 mũ 3 . 5 mũ 2 ) ] } tính nhanh

Toán Lớp 6: 600 : { 450 – [ ( 4 . 5 mũ 3 – 2 mũ 3 . 5 mũ 2 ) ] }
tính
nhanh

Comments ( 2 )

  1. 600 : { 450 – [ ( 4 . 5^3 – 2^3 . 5 ^2 ) ] }
    = 600 : { 450 – [ ( 4 . 125 – 8 . 25 ) ] }
    = 600 : { 450 – [ ( 500 – 200 ) ] }
    = 600 : { 450 – 300 }
    = 600 : 150 
    = 4

  2. 600 : { 450 – [ ( 4 . 5 ^3 – 2 ^ 3 . 5 ^ 2 ) ] }
    = 600 : { 450 – [ (4.5^2 . 5 – 4.2.5^2)]}
    = 600 : { 450 – [ ( 4.5^2 . ( 5-2)]}
    = 600 : { 450 – [ (4.25 .3)] }
    = 600 : { 450 – [ 100 . 3]}
    = 600 : { 450 – 300 }
    = 600 : 150
    = 4

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