if the roots of the equation ax^2+bx+c=0 are negative of each other then? a) c=0 b)b=c=0 c)b=0 d)b=0,c not equal to zero MY ATTEMPT: from the question, sum of roots=zero hence -b/a=0, this implies b=0 then since there are two real roots then the curve must be cutting the x axis at two points.. so its discriminant shall be greater than zero hence b^2-4ac>0 since b=zero hence -4ac>0 this implies c is not equal to zero SO MY ANSWER CAME (D) BUT THE RIGHT ONE IS (C) , PLEASE EXPLAIN! THANKS IN ADVANCE!

RAJAT CHHABRA , 11 Years ago

Grade 12th pass