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3 January, 21:41

For the function g (x) = -1/5x^2+4x+1. Write the equation in vertex form. g (x) = (blank)

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  1. 4 January, 01:26
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    g (x) = - 1/5 (x - 10) ² + 21

    Step-by-step explanation:

    g (x) = - 1/5x²+4x+1 = - 1/5 (x² - 20x) + 1 =

    = - 1/5 (x² - 2*x*10 + (-10) ²) + 1/5 * (-10) ² + 1 = - 1/5 (x - 10) ² + 21
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