Question

8 times the differance of x and y is written as symbolically

Answer 1

The difference of x and y is written as
`x-y`.

Now you have to take 8 times this difference, which means that you have to multiply the whole expression by 8. You'll need parenthesis: you have to write

`8(x-y)`

In fact, if you wrote

`8x-y`

the 8 would multiply x alone, instead of the whole difference.