SQA National 5 Mathematics C847 75 · 2.15

Using the discriminant to determine the number of roots

Code: 2.15
In: 2 Algebraic skills
Course: National 5 Mathematics C847 75
Board: SQA

Codes and titles are read by a script from SQA's published specification and have not been checked by a person. What each point covers is in the specification itself: SQA’s specification.

Points in 2 Algebraic skills

2.1 Working with algebraic expressions involving expansion of brackets
2.2 Factorising an algebraic expression
2.3 Completing the square in a quadratic expression with unitary x coefficient
2.4 Reducing an algebraic fraction to its simplest form
2.5 Applying the four operations to algebraic fractions
2.6 Determining the equation of a straight line
2.7 Working with linear equations and inequations
2.8 Working with simultaneous equations
2.9 Changing the subject of a formula
2.10 Recognise and determine the equation of a quadratic function from its graph
2.11 Sketching a quadratic function
2.12 Identifying features of a quadratic function
2.13 Solving a quadratic equation
2.14 Solving a quadratic equation using the quadratic formula
2.15 Using the discriminant to determine the number of roots