Question

How do you simplify `(x-9)^{2}\div 2`?

Answer 1

`x^2-9x+81/2`

Explanation:

`(x-9)^2` = (x-9)(x-9) = `x^2-18x+81`

Now divide that by 2.

`x^2`/2= `1/2x^2`
`-18x/2=-9x`
`81/2=81/2`

So, `x^2-9x+81/2`

Or simply just `(x-9)^2/2`