Harder Trinomials - Undoing FOIL 6

Now that we have the numbers, lock them in like this:

First: 1 * 2 and Last: 2 * 3 gives ( x - 2 ) ( 2x + 3 ) ... the inner terms give - 4x and the outer terms give 3x

So,

Check with FOIL!

YOUR TURN:

Factor

Here's another one:

Factor

Since the last guy is prime, let's lock him down first:

1 2 3 4 5 6 7 8 9 10 11 12 13

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