Pre-Algebra Examples

$z + 1 + 2 i z^{2} - 1 + 3 i z^{3} + 2 - 2 i$ , $z + z^{2}$

Step 1

Add $z$ and $z$ .

$z^{2} + 2 z$

Step 2

Factor $z$ out of $z^{2} + 2 z$ .

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Step 2.1

Factor $z$ out of $z^{2}$ .

$z \cdot z + 2 z$

Step 2.2

Factor $z$ out of $2 z$ .

$z \cdot z + z \cdot 2$

Step 2.3

Factor $z$ out of $z \cdot z + z \cdot 2$ .

$z (z + 2)$

Step 3

The greatest common factor $GCF$ is the term in front of the factored expression.

$z$