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 66E
To determine

Find the real solutions of equation.

Expert Solution

Answer to Problem 66E

  x=10,x=20

Explanation of Solution

Given information:

  x2+30x+200=0

Formula used: -

  x=b±b24ac2a

  x2+30x+200=0

Now applying quadratic formula:

  x=b±b24ac2a In equation x2+30x+200=0

Here a=1,b=30,c=200

  x=(30)±(30)24(1)(200)2(1)x=30±9008002x=30±1002x=30±102

  x=30+102,x=30102x=10,x=20

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