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Let a + b = 2c, then which of the following expressions is true?

SSC · 2024 · Quantitative Aptitude
Question:
Let a + b = 2c, then which of the following expressions is true?

Options

a²+ 2ac = b² + 2bc
a² - 2bc = b ²- 2ac
a² + 2bc = b² + 2ac
a² - ac = b² - bc
Answer: a² + 2bc = b² + 2ac

Explanation:

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