lesson14outline - MA 153 Lesson 14 Outline Answering of...

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MA 153 Lesson 14 Outline Answering of homework questions over lesson 13. Lesson 14 Section 2.5 Other Types of Equations Absolute Value Example: (a) 4 x = (b) 41 3 x +−= 9 Example: 3 x = Square both sides: 2 9 x = Solve for x : 3, 3 xx =− = is called an extraneous solution. 3 x When you square both sides of an equation, you must check your answer(s) for extraneous solutions (extra solutions). Example: 3 x = Cube both sides: 3 27 x = Solve for x : 3 x = When raising both sides of an equation to an odd power, there is no possibility for extraneous solutions.
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lesson14outline - MA 153 Lesson 14 Outline Answering of...

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