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Chapter 8: Q. 5 (page 917)

In the following exercises, evaluate the rational expression for the given values.

2xx-1(a)x=0(b)x=2(c)x=-1

Short Answer

Expert verified

The required answers are

Part(a) 1

Part(b) 4

Part(c) 0

Step by step solution

01

Part(a) Step 1. Given Information

The given expression is2xx-1

02

Part (a) Step 2. Calculation

Substitute 0 for x,

2xx-1=2(0)0-1=0-1=0

03

Part (b) Step 1. Calculation

Substitute 2 for x,

2xx-1=2(2)2-1=41=4

04

Part (c) Step 1. Calculation

Substitute -1 for x,

2xx-1=2(-1)-1-1=-2-2=1

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Most popular questions from this chapter

Ironing Lenore can do the ironing for her family鈥檚 business in h hours. Her daughter would take h + 2 hours to get the ironing done. If Lenore and her daughter work together, using 2 irons, the number of hours it would take them to do all the ironing is 11h+1h+2.

  1. Simplify the complex fraction 11h+1h+2.
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