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 78E
To determine

Find the real solutions of equation.

Expert Solution

Answer to Problem 78E

  x=75

Explanation of Solution

Given information:

  25x2+70x+49=0

Formula used: -

  x=b±b24ac2a

  25x2+70x+49=0

Now applying quadratic formula:

  x=b±b24ac2a In equation 25x2+70x+49=0

Here a=25,b=70,c=49

  x=(70)±(70)24(25)(49)2(25)x=70±4900490050x=7050x=75

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