SOLUTION: find the foci of the ellilpse with the equation X2/49+y2/64=1

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so a=7, , so b 8
Foce are at [c1,0]and [c2,0]
TO find foci:
49-64=-15 take the square root of that to get c=-3.8.
hence the centre at: (0,0)
Vertices at: (7,0) and (-7,0)
End points of Minor axis at: (0,8) and (0,-8)
Foci: (-3.8,0) and (3.8,0)
Paul.