[PDF] 9 3 study guide and intervention solving quadratic equations by graphing

  • How can we solve a quadratic equation by graphing and how many solutions we could have in different cases?

    These points are known as the “roots” of the quadratic. There are three cases to consider when solving quadratic equations using the graph of �� = �� ( �� ) : If the curve crosses the �� - a x i s twice, �� ( �� ) = 0 has two solutions. If the curve touches the �� - a x i s at a single point, �� ( �� ) = 0 has one solution.

  • What are the three 3 methods used in solving quadratic equations?

    Three methods for solving quadratic equations are factoring, completing the square (square root method), and the quadratic formula.
  • Solving quadratic equations can be difficult, but luckily there are several different methods that we can use depending on what type of quadratic that we are trying to solve. The four methods of solving a quadratic equation are factoring, using the square roots, completing the square and the quadratic formula.
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