Question

 Thực hiện phép tính (tính hợp lý nếu có thể)

a)2³.17+2³.83-14

b) -176+197-(-76+97)

c) 2022-[45-(6-1)²]+2021⁰

Answer 1

help my

Answer 2

a; 2³.17 + 2³.83 - 14

= 2³.(17 + 83) - 14

= 8.100 - 14

= 800 - 14

= 786 

b; -176 + 197 - (-76 + 97)

= -176 + 197 + 76 - 97

= -(176 - 76) + (197 - 97)

= - 100 + 100

= 0 

c; 2022 - [45 - (6 - 1)² ] + 2021⁰

= 2022 - [45 - 5²] + 1

= 2022 + 1 - [45 - 25] 

= 2023 - 20

= 2003

Answer 3

a) \(2^3.17+2^3.83-14\)

\(=2^3.\left(17+83\right)-14\)

\(=8.100-14\)

\(=800-14\)

\(=786\)

b) \(-176+197-\left(-76+97\right)\)

\(=-176+197+76-97\)

\(=\left(-176+76\right)+\left(197-97\right)\) 

\(=-100+100\)

\(=0\)

c) \(2022-\left[45-\left(6-1\right)^2\right]+2021^0\)

\(=2022-\left[45-5^2\right]+1\)

\(=2022-\left[45-25\right]+1\)

\(=2022-20+1\)

\(=2002+1=2003\)