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McGraw Hill Glencoe Algebra 2, 2012 View details

4. Solving Absolute Value Equations

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Exercise 1 Page 30

An absolute value is always non-negative.

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Practice makes perfect

To evaluate the given expression for x=-4, we should substitute -4 for x in the given expression and then simplify. Remember that an absolute value is always non-negative.

|x-8|

Substitute

x= -4

| -4-8|

SubTerm

Subtract term

|-12|

AbsNeg

|-12|=12

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