At about the 0:34 mark, the teacher says the zeros of these would be 5 and 4; he should have said 5 and -4.
In this lesson, we learn how to determine the factors and zeros of a polynomial using synthetic division. By using the coefficients of each term in a polynomial and setting them in the order, we can determine what the zeros are by testing each factor with synthetic division. By finding these zeros, we can determine what factors exist within the polynomial and factor it down. Ultimately, by multiplying all of the zeros found, we can recreate the original function.
Determining factors and listing the zeros of a polynomial using synthetic division
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