answersLogoWhite

0

x2 + 4x - 21 = (x + 7)(x - 3).

The trick is to find 2 numbers which sum to 4 and have a product of -21.

User Avatar

Wiki User

14y ago

Still curious? Ask our experts.

Chat with our AI personalities

ViviVivi
Your ride-or-die bestie who's seen you through every high and low.
Chat with Vivi
EzraEzra
Faith is not about having all the answers, but learning to ask the right questions.
Chat with Ezra
MaxineMaxine
I respect you enough to keep it real.
Chat with Maxine

Add your answer:

Earn +20 pts
Q: What are the factors of x2 plus 4x-21?
Write your answer...
Submit
Still have questions?
magnify glass
imp