Quadratic Equations

If $$\alpha $$ and $$\beta$$ are the zeros of the quadratic polynomial $$a x^{2}+bx+c$$, then $$\alpha^{2}-\beta^{2}=$$
In the given problem, solve and graph. Express answers in both inequality and interval notaion.
What do you mean by the range of a Quadratic Equation.
Find the roots of the following quadratic equation, $$2x^2+x-4=0$$
Find the roots of the equation when the sum $$2$$ and product is $$-8$$.