How do you factor the trinomial $-t^2-14t-45$ ?

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Answer 1 · 2015-12-23T13:41:52

Find factors of c that add to give b

Rewrite as $-(t^2 + 14t + 45)$
Then we need factors of 45 that add to give 14. These are 9 and 5.
Then the expression becomes
$-(t+9)(t+5)$

How do you factor the trinomial -t^2-14t-45-t^2-14t-45?