To find the center of a circle from its general equation, first divide through by the common factor (if any), then complete the square for both x and y terms. The resulting standard form reveals the center as the opposite of the values in the parentheses.
The center of the circle 45x² + 45y² - 60x + 36y + 19 = 0?
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Question context
This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the ETEA Educational Testing and Evaluation Agency preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.