Đáp án:
`a)30`
`b)94`
`c)4`
`d)808`
Giải thích các bước giải:
`a)55-[49-(2³.17-2³.14)]`
`=55-[49-2³.(17-14)]`
`=55-[49-8.3]`
`=55-[49-24]`
`=55-25`
`=30`
`b)10²-[60:(5^6:5^4-3.5)]`
`=100-[60:(5²-15)`
`=100-[60:(25-15)]`
`=100-[60:10]`
`=100-6`
`=94`
`c)160:{17+[3².5-(14+2^11:2^8)]}`
`=160:{17+[9.5-(14+2³)]}`
`=160:{17+[45-(14+8)]}`
`=160:{17+[45-22]}`
`=160:{17+23}`
`=160:40`
`=4`
`d)798+100:[16-2.(5²-22)]`
`=798+100:[16-2.(25-22)]`
`=798+100:[16-2.3]`
`=798+100:[16-6]`
`=798+100:10`
`=798+10`
`=808`
