Unit 20 · Theory of Quadratic Equations
15 randomly selected questions from a bank of 60 · one attempt · 15 minutes on the clock.
Topics covered
- The discriminant of a quadratic equation, and how it determines the nature of the roots
- Cube roots of unity (1, ω, ω²) and their properties, with applications to allied problems
- The sum and product of the roots of a quadratic equation, expressed in terms of its coefficients
- Symmetric functions of the roots of a quadratic equation, including their graphical representation
- Forming a quadratic equation whose roots are given, or are transformations of the roots of another equation
- Solving cubic and biquadratic equations reducible to quadratic form, given one or two roots
- Solving systems of two equations in two variables (linear-quadratic and quadratic-quadratic), including real-life applications
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