4 years ago

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

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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