# Course Category: Quadratic Equations in A-Level Maths|| 2.3

Factorising || 2.3 Quadratics || Key Skill #1

Factorising cubic equations by taking out the highest common factor and using techniques such as completing the square.

Completing The Square || 2.3 Quadratics || Key Skill #2

Expressing quadratics in the completed form (x+a)^2+b.

Completing The Square II || 2.3 Quadratics || Key Skill #3

Using the completed square to find the x and y intercepts and the minimum and maximum point of the quadratic graph and draw the graph.

Real Roots of a Quadratic Eqn || 2.3 Quadratics || Key Skill #4

Using a positive or non-zero discriminant to solve for a range of values for coefficients to have two distinct real roots.

One Real Root of a Quadratic Eqn || 2.3 Quadratics || Key Skill #5

Using a zero discriminant to solve for a range of values for for coefficients to have one root or equal roots or one repeated root.

No Real Roots of the Quadratic Eqn || 2.3 Quadratics || Key Skill #5

Using a negative discriminant to solve for a range of values for for coefficients to have no real roots or imaginary roots.