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Which expression is equal to 7√28-5√63 A:-√7 B:-37√7 C:-11√7 D:√7

Which expression is equal to 7√28-5√63 A:-√7 B:-37√7 C:-11√7 D:√7
asked 13.1k views
5 votes
Which expression is equal to 7√28-5√63
A:-√7
B:-37√7
C:-11√7
D:√7

asked
User Oswaldo Acauan
by
8.1k points

2 Answers

3 votes
sqrt 28 = 2 sqrt7
and sqrt 63 = 3 sqrt7
so answer is 14 sqrt7 - 15 sqrt 7

= - sqrt 7

Its A
answered
User Keith Lyall
by
7.9k points
4 votes
The Answer is A: -√7
answered
User Matt Turner
by
7.2k points
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User TheSD
asked Feb 15, 2019 63.6k views
Which expression is equal to 7√28 - 5 √63 A: -√7 B: √7 C: -37√7 D: -11√7
TheSD asked Feb 15, 2019
by TheSD
8.0k points
1 answer
1 vote
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