Source: Manhattan Prep
If a and b are constants, what is one solution of the equation \((x+a)(x-b)=0?\)
1) \(a = 4\)
2) \(b = 3\)
The OA is D
Target Test Prep is 20% off right now!
Use code FLASH20
Available with Beat the GMAT members only code
MORE DETAILS
If a and b are constants, what is one solution of the equation (x + a)(x – b) = 0?
This topic has expert replies
-
BTGmoderatorLU
- Moderator
- Posts: 2209
- Joined: Sun Oct 15, 2017 1:50 pm
- Followed by:6 members
Timer
00:00
Your Answer
A
B
C
D
E
Global Stats
GMAT/MBA Expert
-
Brent@GMATPrepNow
- GMAT Instructor
- Posts: 16207
- Joined: Mon Dec 08, 2008 6:26 pm
- Location: Vancouver, BC
- Thanked: 5254 times
- Followed by:1268 members
- GMAT Score:770
Timer
00:00
Your Answer
A
B
C
D
E
Global Stats
Target question: What is one solution of the equation (x + a)(x - b) = 0BTGmoderatorLU wrote: ↑Wed Dec 08, 2021 9:50 amSource: Manhattan Prep
If a and b are constants, what is one solution of the equation \((x+a)(x-b)=0?\)
1) \(a = 4\)
2) \(b = 3\)
The OA is D
Statement 1: a = 4
This means the equation is (x + 4)(x - b) = 0
So, x = -4, is one possible solution to the equation.
Since we can answer the target question with certainty, statement 1 is SUFFICIENT
Statement 2: The b = 3
This means the equation is (x + a)(x - 3) = 0
So, x = 3, is one possible solution to the equation.
Since we can answer the target question with certainty, statement 2 is SUFFICIENT
Answer = D
Brent Hanneson - Creator of GMATPrepNow.com
