Question

How do you write the product as a trinomial `(k - 2)(k - 1)`?

Answer 1

`(k-2)(k-1) = k^2-3k+2`

Explanation:

`(k-2)(k-1)`
`color(white)("XXXX")` `=(k)(k-1) + (-2)(k-1)` `color(white)("XXXX")`using distributive property

`color(white)("XXXX")` `= [k^2 - 1k] + [-2k +2]`

`color(white)("XXXX")` `= k^2 -3k +2`