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 90E

(a)

To determine

To rationalize: the denominator of expression 512 .

Expert Solution

Answer to Problem 90E

  512=156

Explanation of Solution

Given information:

Given expression

  512

Calculation:

Consider the given expression.

  512

Now, multiply the numerator and denominator by 12 .

  512=512×1212=6012=2×2×1512=21512=156

Hence,

  512=156

(b)

To determine

To rationalize: the denominator of expression x6 .

Expert Solution

Answer to Problem 90E

  x6=6x6

Explanation of Solution

Given information:

Given expression

  x6

Calculation:

Consider the given expression.

  x6

Now, multiply the numerator and denominator by 6 .

  x6=x6×66=6x6

Hence,

(c)

To determine

To rationalize: the denominator of expression y2z .

Expert Solution

Answer to Problem 90E

  y2z=2zy2z

Explanation of Solution

Given information:

Given expression

  y2z

Calculation:

Consider the given expression.

  y2z

Now, multiply the numerator and denominator by 2z .

  y2z=y2z×2z2z=2zy2z

Hence,

  y2z=2zy2z

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