Yasmine's Work: √56a³b (2³) (7) (a³) (b) 2a √76

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
ChapterP: Prerequisites
SectionP.7: Rational Expressions
Problem 7E
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Question

Imani and Yasmine both simplified the following radical expression, where a>0 and b>0: 56a3−−−−√b56a3b. Their work is shown below.

Which student is correct?

What mistake was made by the student that was incorrect? Explain your reasoning below. 

 

Yasmine's Work:
√56a³b
√(2³) (7) (a³) (b)
2a √/76
Transcribed Image Text:Yasmine's Work: √56a³b √(2³) (7) (a³) (b) 2a √/76
Imani's Work:
56a³b
(2²) (2) (7) (a²) (a) (b)
2a (2) (7) (a) (b)
2a √/14ab
Transcribed Image Text:Imani's Work: 56a³b (2²) (2) (7) (a²) (a) (b) 2a (2) (7) (a) (b) 2a √/14ab
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