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 1.5, Problem 56E
To determine

Solve the equations by completing the square.

Expert Solution

Answer to Problem 56E

  x=2+2,2+2

Explanation of Solution

Given information:

  x24x+2=0

Formula used:

Completing the square method:- In this method solution are solved by completing the square, For this, firstly the coefficient of first term is made 1, then the square of half of coefficient second term is added and subtracted.

Calculation:

  x24x+2=0

4 is added and subtracted

  x24x+2=0(x24x+4)4+2=0(x2)2=2

Taking root both the side

  x2=±2x=±2+2x=2+2,2+2

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