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(x - 3)²=?
  1. x² + 9
  2. x² + 3 + 6x
  3. x² + 9 - 6x
  4. None of these
Explanation

(x - 3)² = (x - 3)(x - 3)  

Use formula: (a - b)² = a² - 2ab + b²  

Here a = x, b = 3  

So: x² - 2(x)(3) + 3² = x² - 6x + 9  

Rearranged: x² + 9 - 6x


Last verified on 16-06-2026

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