Algebra Examples

$x^{2} + 8 x - 20$

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 $8$ .

$- 2, 10$

Step 2

Write the factored form using these integers.

$(x - 2) (x + 10)$