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14 December, 19:32

Solve for x.

2x^2+12x+11 - (x+4) ^2

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Answers (1)
  1. 14 December, 19:52
    0
    2x² + 12x + 11 - (x - 4) ²

    2x² + 12x + 11 - 1 (x - 4) ²

    2x² + 12x + 11 - 1 (x - 4) (x - 4)

    2x² + 12x + 11 - 1 (x (x - 4) - 4 (x - 4))

    2x² + 12x + 11 - 1 (x (x) - x (4) - 4 (x) + 4 (4))

    2x² + 12x + 11 - 1 (x² - 4x - 4x + 16)

    2x² + 12x + 11 - 1 (x² - 8x + 16)

    2x² + 12x + 11 + 1 (x²) + 1 (8x) - 1 (16)

    2x² + 12x + 11 + x² + 8x - 16

    2x² + x² + 12x + 8x + 11 - 16

    3x² + 20x - 5
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