Problem of the Week

Updated at May 25, 2020 12:16 PM

For this week we've brought you this algebra problem.

How would you find the factors of \({z}^{2}-4z-5\)?

Here are the steps:



\[{z}^{2}-4z-5\]

1
Ask: Which two numbers add up to \(-4\) and multiply to \(-5\)?
\(-5\) and \(1\)

2
Rewrite the expression using the above.
\[(z-5)(z+1)\]

Done