answersLogoWhite

0

x2-1=(x-1)(x+1)

It factors out like this because it's the difference of two squares. It only works with subtraction and is always in the format with two groups of parenthases. For example: 16x-4. 16 and 4 are both squares, so it factors out like this: (4x+2)(4x-2). One set is always minus, the other is always plus. The order doesn't matter.

User Avatar

Wiki User

15y 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
CoachCoach
Success isn't just about winning—it's about vision, patience, and playing the long game.
Chat with Coach
JordanJordan
Looking for a career mentor? I've seen my fair share of shake-ups.
Chat with Jordan

Add your answer:

Earn +20 pts
Q: How do you factorise x squared minus 1?
Write your answer...
Submit
Still have questions?
magnify glass
imp