1)a) 2^3.19-2^3.14+1^2019 b) 10^2-[60:(5^6:5^4-3.5)] c) 160:{17+[3^2.5-(14+2^11:2^8)]} d) 798+100:[16-2(16-2(5^2-22)] Dấu ^ là mũ nha

0 bình luận về “1)a) 2^3.19-2^3.14+1^2019 b) 10^2-[60:(5^6:5^4-3.5)] c) 160:{17+[3^2.5-(14+2^11:2^8)]} d) 798+100:[16-2(16-2(5^2-22)] Dấu ^ là mũ nha”

1. a)

   `2^{3}.19-2^{3}.14+1^2019`

   `=2^3.(19-14)+1`

   `=8.5-1`

   `=39`

   b)

   `10^2-[60:(5^6:5^4-3.5)]`

   `=100-[60:(5^2-15)]`

   `=100-(60:10)`

   `=100-6`

   `=94`

   c)

   `160:{17+[3^{2}.5-(14+2^11:2^8)]}`

   `=160:{17+[3^{2}.5-(14+2^3)]}`

   `=160:{17+[3^{2}.5-(14+8)]}`

   `=160:[17+(3^{2}.5-22)]`

   `=160:(17+23)`

   `=4`

   d)

   `798+100:[16-2(16-2(5^2-22)]`

   `=798+100:[16-2(16-2.3)]`

   `=798+100:(16-2.10)`

   `=798+100:(16-20)`

   `=798+100:(-4)`

   `=773`

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2. Đáp án:

   Giải thích các bước giải: a) 2^3.19-2^3.14+1^2019

   =2^3.(19-14)+1

   =8.5-1=39

   b) 10^2-[60:(5^6:5^4-3.5)]=100-[60:(5^2-15)]

   =100-[60:10]=100-6=94

   c) 160:{17+[3^2.5-(14+2^11:2^8)]}=160:{17+[3^2.5-(14+2^3)]}

   =160:{17+[3^2.5-(14+8)]}

   =160:{17+[3^2.5-22]

   =160:{17+23}

   =4

   d) 798+100:[16-2(16-2(5^2-22)]=798+100:[16-2(16-2.3)]

   =798+100:[16-2.10]

   =798+100:[16-20]

   =798+100:(-4)

   =773

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