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The focus of the parabola y ^(2) -x -2y+...

The focus of the parabola `y ^(2) -x -2y+2=0` is at-

A

`((1)/(4), 0)`

B

`((5)/(4) , 1)`

C

`(1,2)`

D

`(1,(5)/(4))`

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The correct Answer is:
B
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