If `P=(x , y),F_1=(3,0),F_2=(-3,0),` and `16 x^2+25 y^2=400` , then `P F_1+P F_2` equal 8 (b) 6 (c) 10 (d) 12

If P=(x,y),F_(1)=(3,0),F_(2)=(-3,0) and 16x^(2)+25y^(2)=400, then PF_(1)+PF_(2) equal 8 (b) 6 (c) 10(d)12

If P(x , y) ,F_(1) (3,0) , F_(2) (-3, 0) " and " 16x^(2) + 25 y^(2) = 400 then show that PF_(1)+PF_(2)=10

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 f(x)=2x^(2)+bx+c and f(0)=3 and f(2)=1 , then f(1) is equal to a)1 b)2 c)0 d) 1/2

IF f(x) =2x^2 +bx +c and f(0) =3 and f (2) =1, then f(1) is equal to

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