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7 March, 13:38

What is the value of 6x^3 + 8x when x = 5

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Answers (2)
  1. 7 March, 13:39
    0
    Just sub x in with 5.

    So 6 (5) ^3+8 (5) = 6 (125) + 40 = 750 + 40 = 790.

    So 790
  2. 7 March, 14:02
    0
    6 (5^3) + 8

    5*5*5

    *6

    +8

    So your answer if you're evaluating is 758
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