Basic Math Examples

$3.14 k^{2} - 3.14 r^{2}$

Step 1

Factor $3.14$ out of $3.14 k^{2} - 3.14 r^{2}$ .

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Step 1.1

Factor $3.14$ out of $3.14 k^{2}$ .

$3.14 (k^{2}) - 3.14 r^{2}$

Step 1.2

Factor $3.14$ out of $- 3.14 r^{2}$ .

$3.14 (k^{2}) + 3.14 (- r^{2})$

Step 1.3

Factor $3.14$ out of $3.14 (k^{2}) + 3.14 (- r^{2})$ .

$3.14 (k^{2} - r^{2})$

Step 2

Factor.

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Step 2.1

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

$3.14 ((k + r) (k - r))$

Step 2.2

Remove unnecessary parentheses.

$3.14 (k + r) (k - r)$