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Intermediate Algebra – Student Workbook – Second Edition 2013

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Lesson 5b - Solving Quadratic Equations<br />

Mini-Lesson<br />

Work through the following problem to put the solution methods of graphing, factoring and<br />

quadratic formula together while working with the same equation.<br />

Problem 12<br />

YOU TRY <strong>–</strong> SOLVING QUADRATIC EQUATIONS<br />

Given the quadratic equation x 2 + 3x <strong>–</strong> 10 = 0, solve using the processes indicated below.<br />

a) Solve by graphing (use your calculator and the Intersection process). Draw a good graph,<br />

label the x-intercepts, and list your final solutions using proper notation.<br />

b) Solve by factoring. Show all steps as previously seen in this lesson. Clearly identify your<br />

final solutions.<br />

c) Solve using the Quadratic Formula. Clearly identify your final solutions.<br />

Scottsdale Community College Page 226 <strong>Intermediate</strong> <strong>Algebra</strong>

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