The OA for this question is D .
Is the OA correct?
Target Test Prep is 20% off right now!
Use code FLASH20
Available with Beat the GMAT members only code
MORE DETAILS
absolute values
This topic has expert replies
-
Vignesh.4384
- Master | Next Rank: 500 Posts
- Posts: 443
- Joined: Sat Jun 28, 2008 6:33 pm
- Thanked: 5 times
-
Azntycoon
- Senior | Next Rank: 100 Posts
- Posts: 31
- Joined: Sun Jul 27, 2008 12:41 pm
- Location: New York, NY
- Thanked: 2 times
I'm getting C as my answer. See below:
Stem #1:
There are 2 answers for x to complete the inequality since |x+3| can be either:
i) x+3 = 14, whereby x = 11
ii) x+3 = -14, whereby x = -17
Therefore, Stem 1 is NS
Stem #2:
Few steps involved here:
i) De-simplify the LHS, so you get x^2+4x+4.
ii) Rearrange the equation, and you end up with x^2+4x-165=0
iii) Factor out, and we get (x+15)(x-11). This means that x can either be 11 or -15.
Therefore, Stem 2 is NS
Combining Stem 1 and 2, we see that 11 is a common occurrence in both. Therefore, the answer is C.
Stem #1:
There are 2 answers for x to complete the inequality since |x+3| can be either:
i) x+3 = 14, whereby x = 11
ii) x+3 = -14, whereby x = -17
Therefore, Stem 1 is NS
Stem #2:
Few steps involved here:
i) De-simplify the LHS, so you get x^2+4x+4.
ii) Rearrange the equation, and you end up with x^2+4x-165=0
iii) Factor out, and we get (x+15)(x-11). This means that x can either be 11 or -15.
Therefore, Stem 2 is NS
Combining Stem 1 and 2, we see that 11 is a common occurrence in both. Therefore, the answer is C.
