Question

Thực hiện phép tính :

a. 3.5² - 16 : 2²

b. 15.141 + 59.15

c. 2³.17 - 2³.14

Answer 1

`a, 3.5^2 -16:2^2`

`= 3. 25 - 16:4`

`= 75 - 4`

`=71`

_____

`b, 15.141 +59 . 15`

`= 15. (141+59)`

`=15. 200`

`=3000`

______

`c, 2^3 . 17 - 2^3 .14`

`= 2^3 . (17-14)`

`= 8 . 3`

`=24`

Answer 2

a: =3^7*3^15*3^12=3^34

b: =(36:18)^5=2^5=32

c: =5^7-5^5=5^5(5^2-1)=5^5*24=75000

d: =5^12:5^8=5^4=625

Answer 3

a: =3*25-16:4

=75-4=71

b: =15(141+59)

=15*200=3000

c: =2^3(17-14)=2^3*3=24

Answer 4