1. Good post? |

## Inequality

Is x > 0?

(1) |x + 3| = 4x – 3

(2) |x + 1| = 2x – 1

2. Good post? |
imo d
stmt 1 gives x=2 if x>-3 and 0 if x<-3 0 not possible so x=2
stmt 2 gives x=2 if x>-1 and 0 if x<-1 0 not possible so x=2

3. Good post? |
I agree with bose. Half of each stmt is a lie. Why do they lie like that!!

4. Good post? |
hi bose, why can't x<-3 ?

5. Good post? |
Bose split the equality into 2 parts. For 1st part, (x+3) is positive, which is when x>-3. For the other part (x+3) is negative, when x<-3.
(You can ignore x=-3 after checking that there won't be any solution there).

That is how the equations with modulus are solved. Sometimes solution satisfies the initial range assumption, sometimes it qualifies the range, sometimes it violates the range, sometimes you get junk results like 4=6... modulus equations & inequations are crazy!

There are currently 1 users browsing this thread. (0 members and 1 guests)

#### Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts
•

SEO by vBSEO ©2010, Crawlability, Inc.