Basic Math Examples

$\frac{1 - t^{2}}{1 + t^{2}}$

Step 1

Rewrite $1$ as $1^{2}$ .

$\frac{1^{2} - t^{2}}{1 + t^{2}}$

Step 2

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

$\frac{(1 + t) (1 - t)}{1 + t^{2}}$