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27 October, 18:58

Find the following showing the steps

(x) = 7 - 5x + 7x^2, find f (-9a)

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  1. 27 October, 22:30
    0
    7 + 45a + 567a²

    Step-by-step explanation:

    to evaluate f ( - 9a) substitute x = - 9a into f (x)

    f ( - 9a) = 7 - 5 ( - 9a) + 7 ( - 9a) ²

    = 7 + 45a + 7 (81a²) = 7 + 45a + 567a²
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