Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole

Chapter 1 - Section 1.1 - Real Numbers - 1.1 Exercises: 70

a.) 10 b.) -1

Work Step by Step

a.)$\mid$2-$\mid$-12$\mid$$\mid Find the Absolute of -12 \mid-12\mid = -(-12) = 12 Rewrite \mid2-12\mid Subtract \mid-10\mid Find the Absolute value of -10 \mid-10\mid = -(-10) = 10 b.) -1 - \mid1 - \mid-1\mid$$\mid$ Find the Absolute value for -1 $\mid$-1$\mid$ = -(-1) = 1 Rewrite -1 - $\mid$1-1$\mid$ -1 - $\mid$0$\mid$ $\mid$0$\mid$ = 0 -1 - 0 = -1

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