# Solving quadratics by taking square root

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

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.