Subject: Mathematics
Book: Maths Mastery
A perfect square is an integer that is the square of another integer, like 16 = 4² or 81 = 9². Recognizing perfect squares is helpful in radical simplifications, factoring, or analyzing quadratic equations. Quick identification is also handy in mental math, especially for approximate square roots. Perfect squares form patterns (1, 4, 9, 16, 25, 36, ...), widely applied in geometry (areas of squares), optimization problems, and numerous real-world calculations. Familiarity with them accelerates solutions to equations or shapes your ability to estimate square roots on the fly.
If a = 4 and b = 5, what is the value of (a+b)^2?
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