Alg2 - Changing forms of parabolas

What
Alg2 - Changing forms of parabolas
When
9/21/2017

How do I change from...
  • Factored to standard?
    • multiply everything out and combine like terms
    • multiply the parentheses first, then distribute a into that answer
  • Vertex to standard?
    • multiply everything out and combine like terms
    • square the parentheses first (times itself and FOIL), then distribute the a, finally add the k
  • Standard to factored? (factoring trinomials videos from a couple weeks back may be more helpful)
    • factor the polynomial
    • split the middle term (into p and q), then factor by grouping
  • Standard to Vertex?
    • a = steal it from standard
    • h = -b/2a
    • k =  plug in the h value to the standard form equation and simplify

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