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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.
What else can I help you with?
Is x squared minus 1 prime?
Nope! It's (x+ 1) (x-1). :)
How do you factor x squared minus x to the fourth?
x^2(1 - x)(1 + x)
How do you factor 2x squared minus 16x plus 14?
2(x - 7)(x - 1)
How do you factor x squared minus 2x minus 8?
(x + 2)(x - 4)
How do you factorise x squared minus x 7?
The answer to this depends on what you mean by "x 7" If you mean: x2 -7x, then it can be factored out as x(x - 7) If you mean: x2 - x7, then you can factor it out as: x2(1 - x5) If you mean: x2 - x + 7, then it can not be factored If you mean: (x2 - x)7, then the inner term can be factored, giving you (x[x - 1])7 If you mean something else, then you will need to be more clear with your question.
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 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)
Factorise x squared plus 6x plus 5?
It is (x+5)(x+1) when factored
How do you factorise x squared - 7x 12?
X squared + 7X + 12?
