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22 October, 13:56

Find and simplify the difference quotients f (6+h) - f (6)

f (x) = 15x² + 6

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  1. 22 October, 14:24
    0
    180h + 15h²

    Step-by-step explanation:

    Since both have same function i. e. function of f, so we simply put 6 + h and 6 in place of x in f (x)

    Here,

    f (x) = 15x² + 6

    Then, f (6+h) - f (6)

    = [15 (6 + h) ² + 6] - [15 (6) ² + 6]

    ⇒ [15 (36 + 12h + h²) + 6] - [15 * 36 + 6]

    ⇒ [ 15 * 36 + 15 * 12h + 15h² + 6 - 15 * 36 - 6 ]

    ⇒ 15 * 12h + 15h²

    ⇒ 180h + 15h²
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