Algebra Examples

$\frac{k^{2} - k - 20}{18}$

Step 1

Consider the form $x^{2} + b x + c$ . Find a pair of integers whose product is $c$ and whose sum is $b$ . In this case, whose product is $- 20$ and whose sum is $- 1$ .

$- 5, 4$

Step 2

Write the factored form using these integers.

$\frac{(k - 5) (k + 4)}{18}$