Value of Multiple Variable Equations- Practice Problem | CAVEMAN CHANG

For this video series, I will focus on practice problems. Each and every one of these questions, I selected because I feel they truly highlight certain math concepts or they may show up in a standardized test. In order to best use this video, I recommend you pause the video and try to solve the problem before unpausing to see the solution and explanation.

Problem of the Video: Given x^2 + y^2 = 6 and (x+y)^2 = 4, what is xy?

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