If a 2 + b 2+ 49c 2 + 18 = 2 ( b +

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M: +2.00/-0.50

If a ²+ b ²+ 49c ²+ 18 = 2 ( b + 28c − a ) , then the value of ( 2a - b + 7 c) is:

[SSC CGL 19th April 2022 Shift-2 With Answers]

A

1

B

-3

C

-4

D

5

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