40. a, b, c are non-zero real numbers such that a + b+6c= 0, roots of ax + bx+cO are (A) Reai and distinct(B) Reai & equal (C) Real and negative (D) none of the

If a,b,c are real numbers and Delta >0 then the roots of ax^(2)+bx+c=0 are

If a,b,c are non-zero real numbers and the equation ax^(2)+bx+c+i=0 has purely imaginary roots,then

The expression ax^2+2bx+b has same sign as that of b for every real x, then the roots of equation bx^2+(b-c)x+b-c-a=0 are (A) real and equal (B) real and unequal (C) imaginary (D) none of these

The expression ax^2+2bx+b has same sign as that of b for every real x, then the roots of equation bx^2+(b-c)x+b-c-a=0 are (A) real and equal (B) real and unequal (C) imaginary (D) none of these

If a,b,c are positive real numbers.then the number of real roots of the equation ax^(2)+b|x|+c=0 is