Real math help.
What is the Discriminant?
Note:
The discriminant of a quadratic is a great way to quickly figure out the number and type of solutions to a quadratic equation! This tutorial introduces you to the discriminant and shows you how to find and interpret it.
Background Tutorials
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Real Number Definitions
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What's a Real Number?
Real numbers are numbers that can be found on the number line. This includes both the rational and irrational numbers. This tutorial explains real numbers and gives some great examples. Take a look!
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Defining Quadratic Equations
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What is a Quadratic Equation?
You can't go through algebra without seeing quadratic equations. The graphs of quadratic equations are parabolas; they tend to look like a smile or a frown. There's also a bunch of ways to solve these equations! Watch this tutorial and get introduced to quadratic equations!
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Solving Quadratics Using the Quadratic Formula
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What is the Quadratic Formula?
If you're solving quadratic equations, knowing the quadratic formula is a MUST! This formula is normally used when no other methods for solving quadratics can be reasonably used. In this tutorial, learn about the quadratic formula and see it used to solve a quadratic equation. Take a look!
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Further Exploration
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Using the Discriminant
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How Do You Use The Discriminant to Determine the Number of Real or Complex Solutions to a Quadratic Equation?
You can use the discriminant to find the number and kind of solutions to a quadratic equation! This tutorial shows you how to find the discriminant of a quadratic equation and use it to figure out how many and what kind of solutions the equation will have.
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