# Whether the equation, − a b = − a b is true for all the values of the variable.

### 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 1.4, Problem 99E
To determine

## Whether the equation, −ab=−ab is true for all the values of the variable.

Expert Solution

Yes, given equation ab=ab is true for all the values of the variables. .

### Explanation of Solution

Given information:

Given equation is ab=ab

Consider the given equation ab=ab

At a=b ,

Left side of the equation ab=aa=1

And right side of the equation, ab=ab=1

Therefore, the equation ab=ab is true for all the values of the variables.

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