The square root of `(7 + 3sqrt5) (7 - 3sqrt5)` is

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Q 1443780643.     The square root of `(7 + 3sqrt5) (7 - 3sqrt5)` is
A

`sqrt5`

B

`2`

C

`4`

D

`3sqrt5`

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Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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