1)220-[3^2.3^3-(12-7^0)^2] 2) [504-(5^2.8+70):3^3+6]:125 3)27.2^3+4.3^2-5.12^0 giúp e vs ạ ,e cảm ơn

`Bạn tham khảo nhé :`

`1, 220-[` $3^{2}$ `.` $3^{3}$ `-` $(12-7^0)^{2}$ `]`

`=220-[9.27-` $(12-1)^{2}$ `]`

`=220-[9.27-` $11^{2}$ `]`

`=220-[9.27-121]`

`=220-[243-121]`

`=220-122`

`=98`

`2, [504-(` $5^{2}$ `.8+70):` $3^{3}$ `+6]:125`

`=[504-(25.8+70):27+6]:125`

`=[504-270:27+6]:125`

`=[504-10+6]:125`

`=500:125`

`=4`

`3, 27.` $2^{3}$ `+4.` $3^{2}$ `-5.` $12^{0}$

`=27.8+4.9-5.1`

`=216+36-5`

`=247`

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