If the distance from a point to the center of an equiaxed hyperbola is D, then the product of the distances from point P to two focal points is? I know the answer is d squared, online, etc

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• 1. The standard equation of hyperbola with a = 4, B = 3 and focus on X axis is
• 2. Hyperbolic equation with a = 4, B = 3 and focus on X-axis I want to ask... X ^ 2 / 9-y ^ 2 / 16 = 1... Is this one true?
• 3. Find the standard equation of hyperbola (1) with focus on X-axis a = 2 √ 5 passing through point a (5,2)
• 4. The focus is on the x-axis, a is equal to twice the change sign 5, passing through the point a (- 5,2)
• 5. It has a common focus with the hyperbola x ^ 2 / 16-y ^ 2 / 9 = 1, and the hyperbolic equation can be solved through the point (- 3 radical 2,4)
• 6. The focus is (0, - 6), (0,6), and the hyperbolic standard equation passing through points (2, - 5) is () A. y220-x216=1B. x220−y216＝1C. y216−x236＝1D. x216−y236＝1
• 7. The standard equation of hyperbola with focus (0,6), (0, - 6) passing through points (2, - 5) Best to write the process! Thank you
• 8. The focus is (0,6) (0, - 6), and the hyperbolic standard equation is obtained through the point (2, - 5)
• 9. : hyperbolic center in the origin, the focus on the X axis, through the point (2, - 3) and asymptote is y = positive and negative two-thirds x, autumn hyperbolic equation
• 10. To solve the hyperbolic equation with the vertex and focus of the ellipse as the focus and vertex respectively Urgent need process, thank you
• 11. It is known that the center of hyperbola is at the origin, the eccentricity is 2, and a focus f (- m, 0) Given that the center of the hyperbola is at the origin, the eccentricity is 2, a focus f (- m.0) (M is a normal number) 1 helps to solve the hyperbolic equation 2. Let Q be a point on the hyperbola, and the line L passing through the points F and Q intersects the Y axis at the point M. if MQ = 2qf, help to solve the L equation
• 12. The eccentricity e of hyperbola C with origin o as the center and f (5,0) as the right focus is known to be 52. The standard equation and asymptote equation of hyperbola C are solved
• 13. The hyperbolic standard equation of a = 4 and B = 3 with coordinate axis as symmetry axis is?
• 14. It is known that the symmetry axes of the points (3, - 1) where the equiaxed hyperbola passes through are all on the coordinate axis, then the standard equation of the hyperbola is
• 15. Find the equation of equiaxed hyperbola passing through point a (3, - 1) and the axis of symmetry is coordinate axis______ ．
• 16. Given the equation x ^ 2 + y ^ 2 + KX + 2Y + k = 0 of a circle, if there are two tangents of the circle made by passing through the fixed point P (1, - 1), then the condition that K should satisfy is
• 17. If the equation of a circle is x ^ 2 + y ^ 2 + KX + 2Y + K ^ 2 = 0, what is the value of K, the area of the circle is the largest? And the coordinates of the center of the circle at this time can be obtained
• 18. Given the circle x2 + Y2 + KX + 2Y + K2 = 0, when the area of the circle is the maximum, the center coordinate is () A. （0，-1）B. （1，-1）C. （-1，0）D. （-1，1）
• 19. If the equation of a circle is x 2+y…… 2+kx+2y+k…… 2 = Oh, then when the area of the circle is the largest, the coordinates of the center of the circle are
• 20. What is the position relationship between circle x ^ 2 + y ^ 2-6x + 5 = 0 and circle x ^ 2 + y ^ 2-8y + 7 = 0? What is the positional relationship between circle x ^ 2 + y ^ 2-6x + 5 = 0 and circle x ^ 2 + y ^ 2-8y + 7 = 0? Apart, intersect, circumscribe, or inscribe? How to judge their position? Now I can get the center coordinates and radius of two circles by using the conditions in the question. But what should I do next?