372,859 views
22 votes
22 votes
- |2x + 4| > -4 a. x>-4 OR x < 0 b. x>-4 AND x < 0 c. x<-4 OR x > 0d. x <-4 And x > 0

User Manish Ranjan
by
3.0k points

1 Answer

14 votes
14 votes

The given inequality is expressed as

-I2x + 4I > - 4

The first step is to divide both sides of the inequality by - 1

It becomes

-I2x + 4I/- 1 > - 4/- 1

Since we are dividing with a negative number, the inequality sign reverses. It becomes

I2x + 4I < 4

- 4 < 2x + 4 < 4

- 4 - 4 < 2x + 4 - 4 < 4 - 4

- 8 < 2x < 0

Dividing through by 2, it becomes

- 8/2 < 2x/2 < 0/2

- 4 < x < 0

Therefore, we can see that x > - 4 and x < 0

The correct option is B

User Pratik Kumar
by
3.5k points