Yes, with discriminant it must be solved. The answer is ''for all real numbers'', but I wonder why? I need to be sure about it. Any explained suggest?Hello, and welcome to FMH!
In order for a quadratic equation to have two distinct roots, what must be true of the discriminant?
Are there any real values of \(\displaystyle a\) for which \(\displaystyle a^2+4\) is negative?The answer is ''for all real numbers'', but I wonder why? . Any explained suggest?