Posted by **y912f** on Saturday, October 9, 2010 at 11:54am.

How can I factor this:

2a^2 + 19a +42

?

I've been trying to do this for so long but I can't figure it out.

Please explain the answer as well.

The only way I can come up with is trial and error, and I've been trying so long and nothing fits..?

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