Factoring a trinomial involves expressing it as a product of two binomials. Here's a breakdown of common techniques:
1. Recognizing the Trinomial Form:
2. Simple Trinomials (a = 1):
Example: Factor x² + 5x + 6
3. Trinomials with a Leading Coefficient (a ≠ 1):
* **Trial and Error:** Guess and check different binomial combinations until you find one that multiplies back to the original trinomial. This requires practice and intuition.
* **Factoring by Grouping (AC Method):**
1. Multiply *a* and *c* (*ac*).
2. Find two numbers that multiply to *ac* and add up to *b*.
3. Rewrite the middle term (*bx*) as the sum of two terms using the two numbers found in step 2.
4. Factor by grouping: factor out the greatest common factor (GCF) from the first two terms and the last two terms. The resulting binomial factor should be the same in both cases.
5. Factor out the common binomial factor.
* **Box Method (Area Model):** Use a grid to organize the terms and factors, similar to how you would multiply binomials using a Punnett square.
Example: Factor 2x² + 7x + 3 (using the AC Method)
4. Special Cases:
5. Tips and Considerations:
Here are some important concepts to review as links:
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