Composition of two functions with domain

The video tutorial explains the functions G(x) = sqrt(x) - 4 and H(x) = 2x + 1, and demonstrates how to evaluate G(x) with specific values. It further explores the concept of function composition, specifically G(H(x)), and simplifies the resulting expression. The tutorial also covers how to determine the domain of the composed function, emphasizing the need to consider the domain of both the individual and composed functions.

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