Please explain Range of quadratic expression `f(x)= ax^2 + bx + c`

For which of the following graphs of the quadratic expression f(x)=ax^(2)+bx+c , the product of abc is negative

For which of the following graphs of the quadratic expression f(x)=ax^(2)+bx+c , the product of abc is negative

Range OF quadratic expression || Range OF ax+b/cx+d

Range OF quadratic expression || Range OF ax+b/cx+d

Graph of quadratic expression y=ax^(2)+bx+c is given then

The quadratic expression ax^(2)+bx+c>0 AA x in R ,then

the minimum value of the quadratic expression x^2+2bx + c is

If the minimum value of the quadratic expression y =ax ^(2)+bx +c is negative attained at negative vlaue of x, then :

If the minimum value of the quadratic expression y =ax ^(2)+bx +c is negative attained at negative vlaue of x, then :