Question

Answer 1

`a)``5*2^2-18:3`

`=5*4-6`

`=20-6`

`=14`

`b)``17*85+15*17-2^3*3*5`

`=17*(85+15)-8*15`

`=17*100-120`

`=1700-120`

`=1580`

`c)``2^3*17-2^3*14`

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

`=2^3*3`

`=8*3`

`=24`

`a)``20 -[30-(5-1)^2 ]`

`=20 -[30-4^2]`

`=20-[30-16]`

`=20-14`

`=6`

`b)``75-(3.5^2-4.2^3)`

`=75-(3.25-4.8)`

`=75-(75-32)`

`=75-75+32`

`=0+32`

`=32`

`c)` `2 . 5^2 + 3 : 71^0 - 54 : 3`

`= 2 . 25 + 3 : 1 - 18`

`= 50 + 3 - 18`

`= 53 - 18`

`= 35`