Mister Exam

Factor polynomial z^2-4

An expression to simplify:

The solution

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