Statistics Examples

$t^{2} - 8 t - 9$

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

$- 9$ and whose sum is

$- 8$ .

$- 9, 1$

Step 2

Write the factored form using these integers.

$(t - 9) (t + 1)$

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$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$