Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

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Basic Polynomial Graphs - Problem 13

Alissa Fong
Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

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After you have found a rational zero of a third degree polynomial, you'll want to factor the remaining quadratic expression if possible to find other rational zeros. BUT, if it can't factor, it could be that there are still more real zeros- but you'll need to use the quadratic formula to find them. You can find the exact irrational zeros by leaving them in radical form, or, if you're asked to sketch a graph, you can use a calculator to find the decimal approximation for your graph.

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