Why is there a ± for quadratics?
Why do we write ± when solving quadratic equations, but not when evaluating square roots? In this lesson, we’ll explore one of the most common misconceptions in algebra and uncover the reasoning behind it. You’ll learn how functions, inverses, and solving equations are connected, and why: ✔️ √25 = 5 ✔️ x² = 25 has […]
3 Variable Systems: Turn It Into a 2 Variable System
In this video, you’ll learn how to solve systems of equations with three variables using a simple organizational trick. Three variable systems can look intimidating but once the system becomes a standard two-variable system, the solution becomes much easier to find. In this lesson you’ll learn: • How to organize a 3 variable system • […]