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8 March, 05:17

What is the value of 3x (2x²+6x+3) when x is - 3?

a. - 27

b. 0

c. 27

d. 54

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Answers (1)
  1. 8 March, 05:21
    0
    3x (2x²+6x+3) =

    3 (-3) (2*3 ²+6*3+3)

    -9 (2*9-18+3) =

    -9 (18-18+3) =

    -9 (0+3)

    -9*3=

    -27
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