# The value of x from the equation x 2 + 9 = 0 by algebraic method and graphical method. ### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071 ### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071

#### Solutions

Chapter 1.9, Problem 37E
To determine

## To calculate: The value of x from the equation x2+9=0 by algebraic method and graphical method.

Expert Solution

The value of x is none.

### Explanation of Solution

Given information:

The equation x3+16=0 .

Calculation:

It is provided that the equation x2+9=0 .

Algebraic method;

The method in which isolate x on one side of the equation and solve the value of x .

From the equation x2+9=0 .

Subtract 9 on the both side of the equation,

x2+99=9x2=9x=9

Solve the value of x from the equation,

x=±3i

Therefore, the value of x=±3i .

the value of x is not real it is imaginary so there is no real solution.

Thus, there is no real value for x .

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