Trigonometry Examples

$x^{2} - 6 x - 27$

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 $- 27$ and whose sum is $- 6$ .

$- 9, 3$

Step 2

Write the factored form using these integers.

$(x - 9) (x + 3)$