After many months of SAT preparation and the first SAT exam was finished, our Math class tilts toward precalculus. We studied the function’s behavior, transformation, and shapes. Many times, we find zeros of polynomials through couple strategies such as Descartes’s rule of Signs, Upper and Lower Bounds for zero, list of possible zeros (factor of constant term/factor of leading coefficient), factoring and long division and synthetic division.

I found out that long division and synthetic division to solve for zeros is really essential, so I want to show how to use them.

- Long Division

It looks almost the same with normal division we did in grade 2. However, complexity but the same element.

2. Synthetic division

The same problem as above, the synthetic division has a different way but result in the same answer.