5'3 Factoring Quadratic Expressions

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5.3 Factoring Quadratic Expressions
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Essential Question How can the zeros of a
quadratic function be used to answer mathematical
and real world problems? Objectives Factor a
quadratic expression. Use factoring to solve a
quadratic equation and to find the zeros of a
quadratic function.
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Rules and Properties
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Use factoring and the Zero-Product Property to
find the zeros of each quadratic function.
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Write the equation in quadratic form and solve.
Check your answers.
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• The height y (in feet) of a soccer ball after it
  is kicked can be modeled by the graph of the
  equation
• where x is the horizontal distance (in feet) that
  the ball travels.
• The ball is not touched, and it lands on the
  ground.
• Find the distance that the ball was kicked.