Solving quadratics by taking square root

1 article
4 videos
2 skills
In this tutorial you will learn about the most basic way of solving quadratic equations.

Solving quadratic equations by taking square roots

ARTICLE
Learn how to solve quadratic equations like x^2=36 or (x-2)^2=49.

Solving quadratic equations by taking square roots

VIDEO 11:03 minutes
Sal shows a few examples of quadratic equations whose form allows for solving by simply taking the square root of both sides (after quickly arranging the equation).

How to solve a quadratic equation by taking the square root of both sides (example)

VIDEO 2:18 minutes
Sal solves the equation 2x^2+3=75 by isolating x^2 and taking the square root of both sides.

Solve quadratic equations by taking the square root

PRACTICE PROBLEMS
Solve quadratic equations of the form (x+a)^2-b=0.

Analyzing the process of solving a quadratic equation by taking square root, step-by-step

VIDEO 4:25 minutes
Sal discusses the exact order of steps in the process of solving the equation 3(x+6)^2=75.

Identifying the mistake a faulty solution of a quadratic equation

VIDEO 1:45 minutes
Sal analyzes a given solution of a quadratic equation, and finds where and what was the error in that process.

Understand the process for solving quadratic equations

PRACTICE PROBLEMS
Analyze the process of solving a quadratic equation by taking the square root.