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31 December, 14:56

Which shows the factored form x2-12x-45

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  1. 31 December, 16:03
    0
    X^2-12x-45

    x^2+3x-15x-45

    x (x+3) - 15 (x+3)

    (x-15) (x+3)
  2. 31 December, 18:19
    0
    45=5*9, 5-9=-4=/=-12

    45=15*3, 3-15=-12

    (x+3) (x-15) = x^2-12x-45
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