Nature of Roots and Sum and Product of Roots
Know what kind of roots you will get before you solve, and build new equations without ever finding the roots.
What this unit covers
Unit 5: Quadratic Equations and Functions
- 1 Solution of Quadratic EquationsFactorise when you can, complete the square when you must, and the formula works every single time. · 10 min
- 2 Nature of Roots and Sum and Product of RootsKnow what kind of roots you will get before you solve, and build new equations without ever finding the roots. · 10 min
- 3 Domain, Range, Composite and Inverse FunctionsA function is a machine with one output for every input. Chain two together, or run one backwards. · 14 min
- 4 Graphs of Linear and Quadratic FunctionsGradient and intercept for a line. Roots, vertex and axis of symmetry for a parabola. Then read answers off the picture. · 14 min