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8 October, 10:34

1. Which is the equation of the power function p (x) = ax3 where p (2) = 48?

a. p (x) = 24x3

b. p (x) = 6x3

c. p (x) = 6x3

d. p (x) = 8x3

2. Which is the completely factored form of 27x3 + y6?

a. (3x + y2) 3

b. (3x + y2) (9x2 + y4)

c. (3x y2) (9x2 + 3xy2 + y4)

d. (3x + y2) (9x2 3xy2 + y4)

3. Which function is an even function?

a. f (x) = x2

b. f (x) = 6x3

c. f (x) = x 2

d. f (x) = 2x3 + 2

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Answers (1)
  1. 8 October, 10:49
    0
    1) p (2) = 6 · 2³ = 6 · 8 = 48

    Answer: B) p (x) = 6 x³

    2) 27 x³ + y^6 = (3 x + y²) (9 x² - 3 x y² + y^4)

    Answer: D)

    3) For even function: f (-x) = f (x)

    f (x) = x²

    f ( - x) = ( - x) ² = x²

    Answer: A) f (x) = x²
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