If `9l^2+16m^2-n^2-24lm=0` then the family of straight lines `lx+my+n=0` are concurrent. The points of concurrency are

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

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

If a^(2)+9b^(2)-4c^(2)=6ab, then the family of lines ax+by+c=0 are concurrent at:

If 16a^(2)+25b^(2)-c^(2)=40ab, then the family of lines ax+by+c=0 is concurrent at the point(s)

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