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a) x^2 - y^2 = 49

b) 8x^2 - 9y^2 =72

2007-05-06 07:57:56 · 1 answers · asked by Anonymous in Science & Mathematics Mathematics

1 answers

1) x^2/49-y^2/49=1
a=7 and b=7 c^2=2*49 so c= 7sqrt2 and e=c/a=sqrt2
2)x^2/9-y^2/8=1
c^2=17 so c= sqrt(17) and e = c/a = 1/3sqrt(17)

2007-05-06 08:05:23 · answer #1 · answered by santmann2002 7 · 0 0

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