Pre-Calculus

I need to write a polynomial of the smallest degree with roots 5 and 6 and the answer can't have parentheses. Can someone point me in the right direction. I have several of these to do.

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  1. (x-5)(x-6)=f(x)
    x^2-11x+30=f(x)

  2. I came up with (x+5)(x+6) = 0
    x^2 - 11x + 30 = 0

    Would that also be correct?

    Thank you for helping

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  3. I can answer my own question-NO yours makes more sense. Its the first day of these so I'm still alittle confused. Thank you for helping

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