(x + 3)*(x + 2*I)*(x - 2*I)
$$\left(x + 3\right) \left(x + 2 i\right) \left(x - 2 i\right)$$
((x + 3)*(x + 2*i))*(x - 2*i)
General simplification
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$$z^{3} + 3 z^{2} + 4 z + 12$$
12.0 + z^3 + 4.0*z + 3.0*z^2
12.0 + z^3 + 4.0*z + 3.0*z^2
$$\left(z + 3\right) \left(z^{2} + 4\right)$$
$$z^{3} + 3 z^{2} + 4 z + 12$$
Combining rational expressions
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$$z \left(z \left(z + 3\right) + 4\right) + 12$$
Assemble expression
[src]
$$z^{3} + 3 z^{2} + 4 z + 12$$
$$z^{3} + 3 z^{2} + 4 z + 12$$
Rational denominator
[src]
$$z^{3} + 3 z^{2} + 4 z + 12$$
$$z^{3} + 3 z^{2} + 4 z + 12$$