This week in Math 10 we learned how to expand and simplify polynomials. This was very confusing so I had to review. Some of the hardest ones was simplifying. one of the hardest questions was:

4. C: (9x -1)(x -4) – (3x +1)(3x -1)

We are going to use double distribution law (9x)(x)(-4) (-1)(x)(-4) = (9x^2 -36x)(-x +5)

We are also going to use DD law fro (3x +1)(3x -1) (3x)(3x)(-1) (1)(3x)(-1) = (9x^2 -3x)(3x -1)

(9x^2 -36x)(-x +5) – (9x^2 -3x)(3x -1)

(37x +5)

Most of what we learned this week was practicing simplifying and expanding polynomials, over and over.