Finite Math Examples

${(Z - 1)}^{2} - {(i)}^{2}$

Step 1

Remove parentheses.

${(Z - 1)}^{2} - i^{2}$

Step 2

Since both terms are perfect squares, factor using the difference of squares formula, $a^{2} - i^{2} = (a + i) (a - i)$ where $a = Z - 1$ and $i = i$ .

$(Z - 1 + i) (Z - 1 - i)$