BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course
RedeemTarget Test Prep · GMAT
Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.
TTP has worked incredibly hard to build the best test prep experience possible, and winning Newsweek’s 2026 Readers’ Choice Award for Best Test Prep would mean a lot to them. If TTP has helped you, they’d be incredibly grateful for your vote. You can vote once each day through September 9.
with Chris Peckover
with Logan Thompson
Complete access from day one. Study on your schedule.
Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.
2/(8 + 3√7) = 2*(8 - 3√7)/[(8 + 3√7)*(8 - 3√7)] = 2*(8 - 3√7)/[8² - (3√7)²] = 2*(8 - 3√7)/[64 - 63] = 2*(8 - 3√7) = 2*(8 - √63)jayanti wrote:√[2√63 + 2/(8+3√7)]
A. 8 + 3√7
B. 4 + 3√7
C. 8
D. 4
E. √7
Anurag@Gurome wrote:2/(8 + 3√7) = 2*(8 - 3√7)/[(8 + 3√7)*(8 - 3√7)] = 2*(8 - 3√7)/[8² - (3√7)²] = 2*(8 - 3√7)/[64 - 63] = 2*(8 - 3√7) = 2*(8 - √63)jayanti wrote:√[2√63 + 2/(8+3√7)]
A. 8 + 3√7
B. 4 + 3√7
C. 8
D. 4
E. √7
Hence, √[2√63 + 2/(8+3√7)] = √[2√63 + 2*(8 - √63)] = √[2√63 + 16 - 2√63)] = √16 = 4
The correct answer is D.
3 is equivalent to √9.oex85 wrote:Would just like an explanation for this part: 2*(8 - 3√7) = 2*(8 - √63)
2√63 = 2√(7*3*3) = (2*3)√7 = 6√7oex85 wrote:Also, what are the pros and cons for breaking down 2√63 into 2√7x3x3=5√7 ? Is it just by choice or is there some magical way to know...?
New here Create free account
