The equation of the parabola whose vertex and focus lies on the x-axis at distance a and a? from the origin, is [RPET 2000]

The equation of the parabola whose vertex and focus lies on the x-axis

1.	The equation of the parabola whose vertex and focus lies on the x-axis at distance a and a? from the origin, is [RPET 2000]
A.
B.	\[{{y}^{2}}=4(a'-a)(x+a)\]
C.	\[{{y}^{2}}=4(a'+a)(x-a)\]
D.	\[{{y}^{2}}=4(a'+a)(x+a)\]
Answer» B. \[{{y}^{2}}=4(a'-a)(x+a)\]

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The equation of the parabola whose vertex and focus lies on the x-axis at distance a and a? from the origin, is [RPET 2000]

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