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Vertices are 3 units and foci 5 units from the centre on the x-axis. Which equation fits?
Ax²/9 − y²/25 = 1
Bx²/25 − y²/9 = 1
Cx²/9 − y²/16 = 1
Dx²/16 − y²/9 = 1
Answer & Solution
Correct answer: C. x²/9 − y²/16 = 1
With a = 3 and c = 5, b² = c² − a² = 16, giving x²/9 − y²/16 = 1.
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