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 z2−4z−5{z}^{2}-4z-5?

Here are the steps:



z2−4z−5{z}^{2}-4z-5

1
Ask: Which two numbers add up to −4-4 and multiply to −5-5?
−5-5 and 11

2
Rewrite the expression using the above.
(z−5)(z+1)(z-5)(z+1)

Done
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