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Mathematics MCQs

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What is the expansion of (a + b)²?

A a² + b²
B a² - b²
C a² + 2ab + b²
D a² - 2ab + b²

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Correct Answer: Option C — a² + 2ab + b²

Explanation: (a+b)² = a² + 2ab + b². This is one of the most fundamental algebraic identities alongside (a-b)² = a²-2ab+b² and (a+b)(a-b) = a²-b². These three identities are the foundation of algebra and appear constantly in competitive exam questions. Memorizing and recognizing them is essential for quick problem solving.

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Mathematics MCQs

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