Examples

$x^{2} + 36$

Step 1

Multiply the constant in the polynomial $x^{2} + 36$ by $- i^{2}$ where $i^{2}$ is equal to $- 1$ .

$x^{2} - 36 i^{2}$

Step 2

Rewrite $36 i^{2}$ as ${(6 i)}^{2}$ .

$x^{2} - {(6 i)}^{2}$

Step 3

Since both terms are perfect squares, factor using the difference of squares formula, $a^{2} - i^{2} = (a + i) (a - i)$ where $a = x$ and $i = 6 i$ .

$(x + 6 i) (x - (6 i))$

Step 4

Multiply $6$ by $- 1$ .

$(x + 6 i) (x - 6 i)$

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