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

asked Dec 16, 2019 13.1k views

5 votes

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

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3 votes

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

= - sqrt 7

Its A

Keith Lyall answered Dec 16, 2019

6.1k points

4 votes

The Answer is A: -√7

Matt Turner answered Dec 23, 2019

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