Consider the statement that may have occurred to early algebraists:

A quadratic equation ax^2 +bx+c = 0 has a solution in the set of real

numbers if and only if its discriminant is non-negative, i.e., b^2-4ac=>0.

Is this statement true or false? If true, give a proof and explain what a proof of a mathematical statement is. If false, give a counterexample and explain what a counterexample

to a statement is.

I have no idea how to do this question please help.