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If S and S'' are the foci of the ellipse...

If S and S'' are the foci of the ellipse `(x^(2))/(25) + (y^(2))/(16) = 1` and if PSP' is a focal chord with SP = 8 then SS'' =

A

4 + s'p

B

s'p - 1

C

4 + sp

D

sp - 1

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a
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