How do you factor #12x^2+28x-5#?
1 Answer
May 30, 2016
(6x - 1)(2x + 5)
Explanation:
Use the new AC Method (Socratic Search)
Converted trinomial:
p' and q' have opposite sign because ac < 0.
Factor pairs of ac = -60) --> (-2, 30). This sum is 28 = b. Then, p' = -2 and q' = 30.
Back to original trinomialy,
Factored from: