91- 6303239042
Quadratic Expression Never Zero
## Formula
For:
$$ax^2+bx+c\ne0\quad\forall x\in\mathbb R$$
the conditions are:
$$D<0$$
and:
$$a\ne0$$
The sign of the quadratic is determined by $$a$$.
## Usage
- Used to determine whether a quadratic equation has no real roots.
