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12 April, 19:07

What are the zeroes of f (x) = x2 - 9x + 20?

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  1. 12 April, 20:25
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    First, factor the polynomial. Then, set each binary answer to zero and solve. Those are the values of x where the graph either crosses or touches the graph.

    x²-9x+20

    (x-5) (x-4)

    x-5=0 | x=5

    x-4=0 | x=4

    The zeros are 4 and 5
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