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11 January, 15:46

Express the product of x+1 and x+8 in standard quadratic form.

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Answers (2)
  1. 11 January, 17:09
    0
    (x + 1) (x + 8)

    x (x + 8) + 1 (x + 8)

    x*x + 8*x + 1*x + 1*8

    x² + 8x + x + 8

    x² + 9x + 8

    Hope this explains it.
  2. 11 January, 17:59
    0
    (x+1) * (x+8) = x^2 + 9x + 8
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