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17 February, 11:59

Write the quadratic function in vertex form: f (x) = 8x2 + 2x - 5

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  1. 17 February, 12:16
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    Hello:

    f (x) = 8x² + 2x - 5

    f (x) = 8 (x²+1/4 x) - 5

    f (x) = 8 (x²+2 (1/8) x + (1/8) ² - (1/8) ²) - 5

    f (x) = 8 ((x+1/8) ²-1/8-5

    f (x) = 8 (x+1/8) ²-41/5 ... (vertex form)
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