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Tuesday, May 14, 2013

Factoring Trinomials, Slide and divide

When factoring Trinomials of the form ax^2 + bx + c.  I prefer the method of decompostion:

• Step 1 – find the value of AC
• Step 2 – find integers a and b whose PRODUCT is AC and whose SUM adds up to B (order of arrangement of a and b WILL NOT matter) – can do in a vertical column for easier visibility. Don’t forget to account for signs!
• Step 3 – rewrite as Ax^2 + ax + bx + C
• Step 4 – factor by grouping where (Ax^2 + ax) + (bx + C) and factor out GCF from each group and common factor again

FactoringTri

However you might want to try the slide and divide method.  To see it, click here.

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