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Factor polynomial x1^2+x2^2

An expression to simplify:

The solution

You have entered [src]
  2     2
x1  + x2 
$$x_{1}^{2} + x_{2}^{2}$$
x1^2 + x2^2
Factorization [src]
(x1 + I*x2)*(x1 - I*x2)
$$\left(x_{1} - i x_{2}\right) \left(x_{1} + i x_{2}\right)$$
(x1 + i*x2)*(x1 - i*x2)
Numerical answer [src]
x1^2 + x2^2
x1^2 + x2^2