Domain and Range of x² + 6x + 5 Explained Step-by-Step (Vertex Method)

Описание: Discover how to find the domain and range of the quadratic function x^2 + 6x + 5 using the vertex method. The domain of any polynomial is all real numbers, and because this function opens upward, its range starts at its minimum value. Using the formula x = -b / (2a), we get x = -3. Substituting this back into the function gives a minimum value of -4. So the domain is all real numbers, and the range is from -4 to infinity. For more clear math explanations, visit https://mathgpt.today.