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30 April, 16:12

F (-2) {3x^2-1, x+8

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  1. 30 April, 17:20
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    f (x) = 3x² - 1

    f (-2) = 3 (-2) ² - 1

    f (-2) = 3 (4) - 1

    f (-2) = 12 - 1

    f (-2) = 11

    f (x) = x < 1

    f (-2) = - 2 < 1

    f (x) = x + 2

    f (-2) = - 2 + 2

    f (-2) = 0

    f (x) = x ≥ 8

    f (-2) = - 2 ≠ 8
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