If the equation `ax^2 + bx+c=0\ (a, b, c in RR, a!= 0 and c < 0)` has roots `-1 and 2`, then

If the roots of equation ax^(2)+bx+c=0;(a,b,c in R and a!=0) are non-real and a+c>b. Then

If the roots of the equation ax^2 + bx + c = 0, a != 0 (a, b, c are real numbers), are imaginary and a + c < b, then

In the equation, ax^2+bx+c=0 , a,b and c in Z , if 3+i is a root of the equation, then value of a+b+c=?

If the equation x^(2)+2x+3=0andax^(2)+bx+c=0 , a,b,c in RR, have a cmmon root , then a : b : c is -

If the equations ax^2+bx+c=0 and cx^2+bx+a=0, a!=c have a negative common root then the value of a-b+c=

If the equations ax^2+bx+c=0 and cx^2+bx+a=0, a!=c have a negative common root then the value of a-b+c=