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13 September, 08:25

Given f (x) = 6x+2 and g (x) = x^3 which of the following are true? check all correct answers

1. f (x) x g (x) = 6x+2x^3

2. f (x) x g (x) = 6x^4+2x^3

3. f (1) x g (3) = 72

4. f (-1) x g (2) = - 32

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Answers (1)
  1. 13 September, 10:24
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    F (x) * g (x) = (6x+2) x³=6x⁴+2x³ Correct answer is 2.

    f (1) = 6*1+2=8

    g (3) = 3³=27

    f (1) * g (3) = 8*27=216

    f (-1) = 6 * (-1) = - 6

    g (2) = 2³=8

    f (-1) * g (2) = - 4*8=-32

    f (-1) * g (2) = - 32 Correct answer 4.
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