BuyFind

Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071
BuyFind

Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071

Solutions

Chapter 1.2, Problem 89E

(a)

To determine

To rationalize: the denominator of expression 110 .

Expert Solution

Answer to Problem 89E

  110=1010

Explanation of Solution

Given information:

Given expression

  110

Calculation:

Consider the given expression.

  110

Now, multiply the numerator and denominator by 10 .

  110=110×1010=1010

Hence,

  110=1010

(b)

To determine

To rationalize: the denominator of expression 2x .

Expert Solution

Answer to Problem 89E

  2x=2xx

Explanation of Solution

Given information:

Given expression

  2x

Calculation:

Consider the given expression.

  2x

Now, multiply the numerator and denominator by x .

  2x=2x×xx=2xx

Hence,

(c)

To determine

To rationalize: the denominator of expression x3 .

Expert Solution

Answer to Problem 89E

  x3=3x3

Explanation of Solution

Given information:

Given expression

  x3

Calculation:

Consider the given expression.

  x3

Now, multiply the numerator and denominator by 3 .

  x3=x3×33=3x3

Hence,

  x3=3x3

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