Quadratric expressions

• The expression of the form ax^2 +bx+c where a not equal to 0 is called quadratric expression
• If b^2 - 4ac > 0, there are two distinct real roots.
• A quadratic equation is an equation that can be written as y=ax^2+bx+c, where a≠0.
• A quadratic equation can have two real solutions, one real solution, or no real solutions depending on its discriminant value.
• The graph of any quadratic function is always a parabola.
• If b^2 - 4ac < 0, then there are no real roots but complex conjugate pairs.
• Sum of roots of a equation is -b/a
• Product of the roots of a quadratic equation is c/a