0
Best Answer
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.
Wiki User
∙ 14y agoThis answer is:
Add your answer:
Earn +20 ptsQ: How do you factorise x squared minus 1?
Write your answer...
Submit
Still have questions?
Continue Learning about Calculus
Related questions
X squared minus 8x minus 15?
What about it? Factorise it?
How do you factorise x squared minus 7 x?
x(x - 7)
How Do you factorise x squared minus 16?
13X squared + 7X + 12
How do you factorise x squared minus 4?
X2 - 4= (x + 2)(x - 2)===========
How do you factorise 5x squared minus 9x minus 2?
5x2 + 9x + 13 has no real factors.
How do you factorise x squared minus 121?
( x2 - 121 ) = (x + 11) times (x - 11)
How how do you factorise 3x squared minus 8x?
3x2 - 8x = x(3x - 8)
How do you factorise x squared - 5x - 6?
(x - 6)(x + 1)
How do you factorise 2x squared minus 13x plus 21?
(x - 3)(2x - 7)
Factorise x squared plus 3x plus 2?
(x + 2)(x + 1)
How do you simplify 3x squared plus 7x minus 40 divided by x plus 5?
Factorise it: (x + 5)(3x - 8)
How do you factorise x squared - 7x 12?
X squared + 7X + 12?
Copyright ©2024 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.