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Showing posts with label factoring. Show all posts
Showing posts with label factoring. Show all posts

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.