**Factor**:

**Step 1**: Look at the factors of the first and last terms.

**Step 2**: Choose the factors where the multiples add to the middle term.

**Step 3**: Determine the signs using the product of the inner and outer terms.

**Step 4**. Check by multiplying.

As you can see there are many more combinations to consider when the leading coefficient is not 1. These take time but become routine with practice.

**Factor the trinomials**.

**Video Examples on YouTube:**

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