`[(5)sqrt7 + sqrt7) xx (4sqrt7 + 8sqrt7)]- (19)^ 2 = ?`

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Q 1585656567.     `[(5)sqrt7 + sqrt7) xx (4sqrt7 + 8sqrt7)]- (19)^ 2 = ?`
IBPS-PO 2012
A

`143`

B

`145`

C

`153`

D

Cannot be determined

E

none of these

HINT


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

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