Question

Answer 1

bài thi hay sao mà có chữ 2đ vậy bạn

Answer 2

\(a,\left(-214\right)+\left(-120\right)+\left(-16\right)\\ =-\left(214+120+16\right)\\ =-\left(334+16\right)=-350\\ b,12+5^{19}:5^{17}-3^2.2020^0\\ =12+5^{19-17}-9.1\\ =12+5^2-9\\ =12+25-9\\ =37-9=28\)

Answer 3

Answer 4

Answer 5

\(a,\left(-214\right)+\left(-120\right)+\left(-16\right)\)

\(=\left[\left(-214\right)+\left(-16\right)\right]+\left(-120\right)\)

\(=\left(-230\right)+\left(-120\right)\)

\(=-350\)

\(b,12+5^{19}:5^{17}-3^2.2020^0\)

\(=12+5^2-9.1\)

\(=12+25-9\)

\(=28\)