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Harman [31]
4 years ago
7

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

Mathematics
2 answers:
ddd [48]4 years ago
6 0
The Answer is A: -√7
Vikki [24]4 years ago
5 0
Sqrt 28  = 2 sqrt7
and sqrt 63 = 3 sqrt7
so  answer is 14 sqrt7 - 15 sqrt 7

= - sqrt 7

Its A
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