If the three lines `a x+a^2y+1=0,\ b x+b^2y+1=0\ a n d\ c x+c^2y+1=0` are concurrent, show that at least two of three constants `a , b ,\ c` are equal.

If the three lines ax+a^(2)y+1=0,bx+b^(2)y=1=0 and cx+c^(2)y+1=0 are concurrent,show that at least two of three constants a,b,c are equal.

If the straight lines a^(2)x+ay+k=0, b^(2) x+by+k=0 and c^(2)x+cy+k=0 ( k ne 0) are concurrent, show that at least two of the three constant a,b,c are equal.

The three lines a x+b y+c=0, b x+c y+a=0 and c x+a y+b=0 are concurrent only when

If the lines a x+12 y+1=0,\ b x+13 y+1=0 and c x+14 y+1=0 are concurrent, then a , b , c are in

If the lines a x+2y+1=0,b x+3y+1=0a n dc x+4y+1=0 are concurrent, then a ,b ,c are in

If the three straight lines ax + 2y + 1 = 0, 3y + bx + 1 = 0 and cx+ 4y + 1=0 are concurrent, then show that- a. b, c are in AP.

If the lines x+a y+a=0,\ b x+y+b=0\ a n d\ c x+c y+1=0 are concurrent, then write the value of 2a b c-a b-b c-c adot

If the lines x+a y+a=0,\ b x+y+b=0\ a n d\ c x+c y+1=0 are concurrent, then write the value of 2a b c-a b-b c-c adot