If `25a^2 + 16b^2 – 40ab – c^2 = 0` , then the family of straight line 2ax + by + c = 0 is concurrent at

If 4a^2 + 9b^2 - c^2 + 12ab =0 , then the family of straight lines ax + by + c =0 is concurrent at

If a^2+b^2-c^2-2ab = 0 , then the family of straight lines ax + by + c = 0

If a^2+b^2-c^2-2ab = 0 , then the family of straight lines ax + by + c = 0 is concurrent at the points

If 4a^2+9b^2_c^2+12ab=0 then the family of straight lines ax+by+c=0 is concurrent at

(i) If a, b, c, are in A.P. then show that ax….+….by +c=0 passes through a fixed point. Find then fixed point. (ii) If 9a^(2)+16b^(2)-24ab-25c^(2)=0, then the family of straight lines ax+by+0 is concurrent at the point whose co-ordinates are given by "________" (iii) If 3a+4b-5c=0, then the family of straight lines ax+by+c=0 passes through a fixed point. Find the coordinates of the point.

If 4a^2+9b^2-c^2+12ab= 0 then the family of straight lines ax + by +c=0 is concurrent at : (A) (-3,2) or (2,3) (B) (-2,3) or (2,-3) (C) (3,2) or (-3,-2) (D) (2,3) or (-2,-3)

2a+b+2c=0(a,b,c in R), then the family of lines ax+by+c=0 is concurrent at

If 6a^2-3b^2-c^2+7ab-ac+4bc=0 , then the family of lines ax+by+c=0 is concurrent at

If 6a^2-3b^2-c^2+7ab-ac+4bc-0 , then the family of lines ax+by+c=0 is concurrent at