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, Problem 71RE
To determine

To find the real solutions of equation 2x2+x=1 .

Expert Solution

Answer to Problem 71RE

The solution is x=1,12 .

Explanation of Solution

Given information:

  2x2+x=1

Formula used:

Quadratic Formula:- x=b±b24ac2a .

Calculations:

  a=2b=1c=1

  x=(1)±(1)24(2)(1)2(2)

  x=1±1+84

  x=1±94

  x=1±34

  x=1+34=24=12 and x=134=44=1

The solution of the equation is x=1,12 .

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