`(2sqrt(392) - 21) + ( sqrt8 -7)^ 2 = (?)^ 2`

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Q 1505145968.     `(2sqrt(392) - 21) + ( sqrt8 -7)^ 2 = (?)^ 2`
CORPORATION BANK (PO) 2009
A

8

B

5

C

7

D

4

E

6

HINT


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

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