Solve an Equation Using Square Roots

In this Math Test Prep video, the instructor guides students through solving a standardized test question using square roots. The problem involves finding the value of x in the equation x squared equals 256. The instructor explains the inverse operation of squaring, which is finding the square root, and demonstrates how to evaluate multiple choice answers to identify the correct solution. The video concludes with the correct answer, negative 16, and a brief explanation of why it is the solution.

Why can we rule out negative 4 as a solution?

What are the possible square roots of 256?