Forgot Password?
 
Links
About Arcadia LSAT Shorthand NotationArcadia Prep's GMAT CourseArcadia Prep's LSAT CourseArcadia Prep's SAT CourseArcadia Prep's GRE CourseThe Simply Brilliant GMAT AppAbout the MCATMCAT Physical and Biological SciencesAbout Arcadia Prep's MCAT CourseTerms of SaleTerms of UseAbout Arcadia Apps
iPhone App Store
GGRE Prep App
GMAT Prep App
LSAT Prep App
LSAT Prep
SAT Prep App
 
Back to Questions

2x2+(2x)2

  
(A)  
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Press: Set A - Math Review

Collapse All Subordinate Threads
 
Replies to This Thread: 1 | ----
 
Posted: 02/06/2012 21:29
How do you know if 2x be equal
Contributor
Reply 1 of 1
Replies to This Thread: 0 | ----
 
Posted: 02/06/2012 23:52
Michele, I think your question is about the fundamental rule of arithmetic:
4 = 4
1 + 3 = 4
2 + 2 = 4
Since I am aware you know this rule, you must have overlooked these while being busy with exponent rules.

What we can do is simplify (2x)^2 into 4x^2 that make the sum;
2x^2 + 4x^2 =
Now we can add the coefficients cause we have like exponents and we'll get 6x^2, thus...
2x^2 + 4x^2 = 6x^2
2x^2 + (2x)^2 = 6x^2
Just as equal as 2 + 4 = 6 :)

Niels
Image Not Available
 
Replies to This Thread: 1 | ----
 
Posted: 07/28/2012 23:46
The answer to this question is not in the multiple choice. Multiple choice E is the incorrect answer.
Image Not Available
Reply 1 of 1
Replies to This Thread: 0 | ----
 
Posted: 07/28/2012 23:50
Please disregard my comment..multiple choice E is correct. I was looking at answer D when I was writing the comment.
Arcadia Prep © 2012.
Contact Arcadia  |  Terms of Use  |  Terms of Sale  |  Change Log-in Info