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A cubic equation can have 3 real roots or 1 real root and a complex conjugate pair. In this video I show you how through the graphs of cubic equations. I then show you how to solve cubic equations that have complex roots by looking at this example:
You are then given this question to try.
Axiom: A statement or proposition that is regarded as being established, accepted, or self-evidently true.
Corollary: A proposition that follows from (and is often appended... (More)
Theorem: A general proposition not self-evident but proved by a chain of reasoning; a truth established by means of accepted truths.
1. Vertically opposite angles are equal in measure.
2. In an isosceles triangle the angles opposite the equal sides are equal. Conversely, if two angles are equal, then the triangle is isosceles.
3. If a transversal makes equal alternate angles on two lines then the lines are parallel. Conversely, if two lines are parallel, then any transversal will make equal alternate angles with them.
4.* The angles in any triangle add to 180.
5. Two lines are parallel if,... (More)
