The graph of the polynomial `f(x)=a x^2+b x+c` is as shown below (Fig. 2.19). Write the signs of `' a '` and `b^2-4a c` . FIGURE

The graph of the polynomial f(x)=a x^2+b x+c is as shown in Fig. 2.20. Write the value of b^2-4a c and the number of real zeros of f(x) . (FIGURE)

The graph of a polynomial f(x) is as shown in Fig. 2.21. Write the number of real zeros of f(x) . (FIGURE)

The graph of a polynomial f(x) is as shown in Fig.2.21. Write the number of real zeros of f(x).( FIGURE)

The graph of the polynomial f(x)=ax^(2)+bx+c is as shown in Fig.2.20. Write the value of b^(2)-4ac and the number of real zeros of f(x).( FIGURE )

The graph of a polynomial y=f(x) , shown in Fig. 2.18. Find the number of real zeros of f(x) . (FIGURE)

The graph of a polynomial y=f(x), shown in Fig.2.18 .Find the number of real zeros of f(x).( FIGURE)

If graph of quadratic polynomial a x^2+b x+c cuts positive direction of y-axis, then what is the sign of c ?

If the graph of quadratic polynomial a x^2+b x+c cuts negative direction of y-axis, then what is the sign of c ?

In the polynomial p(x)= a x^ 3 + b x^ 2 + c x + d if p(2)=p(-2), prove that 4a+c=0.

The graph of f(x) = (x-3)/(x^(2) - 2x - 3) is shown below. What is the domain of f(x) ?