Basic Math Examples

81

$81$

Step 1

The factors for

81

$81$ are all numbers between

- 81

$- 81$ and

81

$81$ , which divide

81

$81$ evenly.

Check numbers between

- 81

$- 81$ and

81

$81$

Step 2

Find the factor pairs of

81

$81$ where

x \cdot y = 81

$x \cdot y = 81$ .

\begin{matrix} x & y 1 & 81 3 & 27 9 & 9 - 1 & - 81 - 3 & - 27 - 9 & - 9 \end{matrix}

$\begin{array}{c} x & y \\ 1 & 81 \\ 3 & 27 \\ 9 & 9 \\ - 1 & - 81 \\ - 3 & - 27 \\ - 9 & - 9 \end{array}$

Step 3

List the factors for

81

$81$ .

- 81, - 27, - 9, - 3, - 1, 1, 3, 9, 27, 81

$- 81, - 27, - 9, - 3, - 1, 1, 3, 9, 27, 81$