500 + {5. [405 − (20.15 − 2^3 .5^2 ) : 4] − (2018^0)

0 bình luận về “500 + {5. [405 − (20.15 − 2^3 .5^2 ) : 4] − (2018^0)”

1. `500 + {5. [405 − (20.15 − 2^3 .5^2 ) : 4] − (2018^0)`

   `= 500 + {5. [405 − (20.15 − 8.25 ) : 4] − 1}`

    `= 500 + {5. [405 − (300 – 200) : 4] − 1}`

   `= 500 + {5. [405 − 25] − 1}`

   `= 500 + {5. 380 – 1}`

   `= 500 + 5.390 – 1`

   `= 2399`

   Trả lời

2. Đáp án:

    `2399`

   Giải thích các bước giải:

   `500 + {5. [405 − (20.15 − 2³ .5² ) : 4] − (2018^0)}` 

   `= 500 + { 5.[ 405 – (300 – 8.25 ) :4] – 1}`

   `= 500 + { 5.[ 405 – (300 – 200 ) :4] – 1}`

   `= 500 + { 5.[ 405 – 100 :4] – 1}`

   `= 500 + { 5.[ 405 – 25] -1}`

   `= 500 + ( 5. 380 – 1 )`

   `= 500 + 1900 -1`

   `= 2400 -1 `

   `= 2399`

   Trả lời