Factor the polynomial completely Once you are finished facto
     Factor the polynomial completely. Once you are finished factoring, none of the factors you obtain should be factorable.  9x^2 + y^2  In the given binomial, the first and last terms are perfect squares.  9x^2 = ()^2  4y^2 = ()^2 
  
  Solution
9x2 = (3x)2 = (-3x)2
4y2 = (2y)2 = (-2y)2

