#### Answer

If this quadratic equation has two distinct real roots, then its discriminant is greater than zero, and if the discriminant of this quadratic equation is greater than zero, then the equation has two real roots.

#### Work Step by Step

The biconditional of p and q is "p if, and only if, q" and is denoted p $\leftrightarrow$ q. It is logically equivalent to the conjunction (p $\rightarrow$ q) $\land$ (q $\rightarrow$ p). In other words p $\leftrightarrow$ q is the same as saying both "if p, then q" and "if q, then p."