If `P(x,y)` is any point on the ellipse `16x^2+25y^2=400` and `F_1=(3,0), F_2=(-3,0)` then find the value of `PF_1+PF_2`

If P(x ,y) is any point on the ellipse 16 x^2+25 y^2=400 and F_1=(3,0)F_2=(-3,0) , then find the value of P F_1+P F_2dot

If P(x ,y) is any point on the ellipse 16 x^2+25 y^2=400 and f_1=(3,0)F_2=(-3,0) , then find the value of P F_1+P F_2dot

If P(x ,y) is any point on the ellipse 16 x^2+25 y^2=400 and f_1=(3,0)F_2=(-3,0) , then find the value of P F_1+P F_2dot

Foci of the ellipse 16x^(2)+25y^(2)=400 are

P(x,y) is any point on ellipse 16x^(2)+25y^(2) =400 . If F_(1)-=(3,0) and F_(2) -=(-3,0) , then prove that PF_(1)+PF_(2) is constant and find its value .

The eccentricity of the ellipse 16x^2 + 25y^2 = 400 is

If P (x,y) be any point on 16x^(2) + 25y^(2) = 400 with foci F_(1) (3,0) and F_(2) (-3,0) then PF_(1) + PF_(2) is

If P is any point on the ellipse 16 x^(2)+25 y^(2)=400 then P S_(1)+P S_(2)= , where S_(1) and S_(2) are the foci of the ellipse.