Events & Promotions
|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Jun 0210:00 AM PDT
-11:00 AM PDT
Probability is one of the most important GMAT Quant topics because it often combines logic, counting, set theory, and permutations & combinations. Many students try to solve probability questions by listing every possible case, but GMAT probability...
May 2110:00 AM EDT
-11:59 PM EDT
Make the most of your break with the most realistic GMAT™ prep. Take up to $700 off select products.
May 2910:00 AM IST
-11:00 PM IST
Start your journey with a fully customized action plan and work with a dedicated mentor to achieve a 735+ score.- Jun 10
06:00 AM PDT
-06:15 PM PDT
Register for the GMAT Club Virtual MBA Spotlight Fair – the world’s premier event for serious MBA candidates. This is your chance to hear directly from Admissions Directors at nearly every Top 30 MBA program..
10 Jun 2019, 03:32
Kudos
Bookmarks
Hey guys, would highly appreciate it if someone could explain how can I solve the below question :please :please
[x^2-6x+9] / [18-6x]
[x^2-6x+9] / [18-6x]
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Quantitative Questions Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
10 Jun 2019, 04:44
Kudos
Bookmarks
kasravafayie
[x^2-6x+9] / [18-6x]
= [x^2-6x+9] /6[3-x]
= [x-3]^2 /[6(3-x)]
= [x-3]^2 /[(-6)(x-3)]
= [x-3]/[-6] (if x=/=3)
= [3-x]/[6]
=1/2-x/6
10 Jun 2019, 13:46
Kudos
Bookmarks
kasravafayie
When you say 'same numbers with different signs', I assume you're talking about the way that this fraction reduces to:
\(\frac{(x-3)(x-3)}{6(3-x)}\)
That is, you have x-3 on the top, but 3-x on the bottom, and you're not sure how to factor. Right?
The answer is that you can rewrite 3-x as -(x-3), or -1 times (x-3).
\(\frac{(x-3)(x-3)}{-6(x-3)}\)
\(\frac{(x-3)}{-6}\)
When you've practiced this a bit, you won't need to explicitly think about that every single time! You'll just need to remember that (x-3)/(3-x) (or any fraction that's 'reversed' like that one) will reduce to -1.
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Quantitative Questions Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
