McGraw Hill Glencoe Algebra 1, 2012
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McGraw Hill Glencoe Algebra 1, 2012 View details
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Exercise 16 Page 541

An absolute value is always non-negative.

Practice makes perfect
To evaluate the given expression for we should substitute for in the given expression. Remember that the absolute value acts as a grouping symbol, so we will perform the operations inside the absolute value bars first.