How do you factor $c^2+c-12$ ?

Question

1621 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-09-12T19:27:07

$(c+4)(c-3)$

$c^2 +1c-12 " "larr$ a quadratic trinomial

Find the factors of 12 which SUBTRACT (because of (MINUS 12)
to give 1 (because of 1c)

$3xx4 = 12" " and " "4-3 = 1" "larr$ the factors are 4 and 3

The signs will be DIFFERENT (because of MINUS 12), there must be more POSITIVE (because of PLUS 1)

$(c+4)(c-3)$

How do you factor c^2+c-12c^2+c-12?