Question

Factor: m^2 - 20m - 21

Answer 1

(m-21) (m+1)there I thinks it's right unless I messed up my work

Answer 2

`(m - 21)(m + 1)`

Explanation:

`m^(2) - 20m - 21`

Lets split the middle term.

`=> m^(2) - 21m + m - 21`

`=> m(m - 21) + 1(m - 21)`

`=> (m - 21)(m + 1)`