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x-Intercepts of Polynomial Functions Practice

Practice Problems

We want to find the zeros of these polynomials: 

  1. p(x)=3x^3-3x^2-18x
  2. p(x)=2x^3-x^2-8x+4
  3. p(x)=(x^2-9)(x^2+x-2)
  4. p(x)=(2x^2-9x+7)(x-2)

Plot all the zeros (x-intercepts) of the polynomial in the graph.

graph

Source: Khan Academy, https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:poly-graphs/x2ec2f6f830c9fb89:poly-zeros/e/find-the-zeros-of-polynomials
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