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I need to factor this trinomial,
but I can't figure it out.

2q²-9q-18

(2q+3)(q-6) , i just think of it was you know the 2q and q because of 2q^2. and you know the last two have to multiply to be 18

3 * 6 = 18

2 * 6 = 12

12 - 3 = 9

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