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Factor polynomial 3+3*x^2

An expression to simplify:

The solution

You have entered [src]
       2
3 + 3*x 
$$3 x^{2} + 3$$
3 + 3*x^2
Factorization [src]
(x + I)*(x - I)
$$\left(x - i\right) \left(x + i\right)$$
(x + i)*(x - i)
Numerical answer [src]
3.0 + 3.0*x^2
3.0 + 3.0*x^2
Combining rational expressions [src]
  /     2\
3*\1 + x /
$$3 \left(x^{2} + 1\right)$$
3*(1 + x^2)