Perfect+Square+Trinomials

__**What is a Perfect Square?**__ To summarize there's a few ways to know you have one.
 * If it's a binomial multiplied by itself.
 * The first and last terms are positive perfect squares in the trinomial.
 * The middle term is twice the product of the terms in the binonmial. (BI-nomial. As in: By golly if you didn't know bi meant two you've got more problems than factoring.)

With these you know you have a perfect square trinomial. From there you need to find the square roots of all the terms then rewrite the expression.


 * An example of this includes...x^2+4x+4=? Answer: (x+2)^2 **


 * So if you could solve that example lets try a harder one: x^2+9x+81=? Answer: (x+9)^2 **

Whenever you get your two binomials they should be the same term in a perfect square. Why? Because it's perfect. Although not very squarish. More like. Squared but with little parenthesis that make it look like a circular square. This example ends up with a perfect square: (x+2)^2 or (x+9)^2

Sources: Mr. Le's Notes All me. media type="youtube" key="xlZAftQcnGg" height="315" width="420" Don't like someone who's bad at teaching? Use this video.