-
sawaan6789
- Newbie | Next Rank: 10 Posts
- Posts: 3
- Joined: Sat Oct 24, 2009 6:00 am
(x+y)^(2)=x^2+2xy+y^2
(x-y)^(2)=x^2-2xy+y^2
(x+y)^(2)-(x-y)^(2)=2xy+2xy=4xy
2^(x+y)^(2)/2^(x-y)^(2)=2^[(x+y)^(2)-(x-y)^(2)]=2^4xy
xy=1
2^4=16
BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course
Redeem
Featured Course
Target Test Prep GMAT OnDemand
Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.
- 715+ score guarantee — highest in the industry (99th percentile)
- 52 chapters · 1,500+ lessons · 4,000+ practice questions
- 400 hours of video · 1,500+ instructor-led HD smartboard lessons
- 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
- 24/7 live support + weekly Zoom office hours with GMAT instructors
- TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
- 1,200+ flashcards + AI-powered study assistant & daily calendar
- OnDemand, LiveTeach & GMAT Bootcamp formats available
- Also: GRE, SAT Math & Executive Assessment courses
- MBA Admissions Consulting now available
- 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
- 200,000+ students served
- 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★
5.0
(559 reviews)
130-pt guarantee
$0 to start
then $127/mo
VIC problem
Source: Beat The GMAT — Problem Solving |
x^2+2xy+y^2 x^2+y^2
2 2 *2^2 4
------------- = ------------- = ------ = 16
x^2-2xy+y^2 x^2+y^2
2 2 *2^-2 1/4
2 2 *2^2 4
------------- = ------------- = ------ = 16
x^2-2xy+y^2 x^2+y^2
2 2 *2^-2 1/4
Leon
