Which of the following equations has 2 a...

Which of the following equations has `2` as a root?

A

`x^(2) +4 =0`

B

`x ^(2) -4=0`

C

`x ^(2) + 3x -12 =0`

D

`2x ^(2) - 6x -2=0`

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The correct Answer is:

B

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