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Factor polynomial x^2-4

An expression to simplify:

The solution

You have entered [src]
 2    
x  - 4
$$x^{2} - 4$$
x^2 - 4
Factorization [src]
(x + 2)*(x - 2)
$$\left(x - 2\right) \left(x + 2\right)$$
(x + 2)*(x - 2)
Numerical answer [src]
-4.0 + x^2
-4.0 + x^2
Combinatorics [src]
(-2 + x)*(2 + x)
$$\left(x - 2\right) \left(x + 2\right)$$
(-2 + x)*(2 + x)