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The equation of a common tangent to y^(2...

The equation of a common tangent to `y^(2)=4x` and the curve `x^(2)+4y^(2)=8` can be

A

`x-2y+2=0`

B

`x+2y+4=0`

C

`x-2y=4`

D

`x+2y=4`

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The correct Answer is:
B
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