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If the foci of the ellipse (x^2)/(16)+(y...

If the foci of the ellipse `(x^2)/(16)+(y^2)/(b^2)=1` and the hyperbola `(x^2)/(144)-(y^2)/(81)=1/(25)` coincide write the value of `b^2dot`

A

18

B

`-16`

C

16

D

`-18`

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