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9 June, 07:28

Which expressions are equivalent to 3 (-2a-4) + 3a3 (-2a-4) + 3a3, left parenthesis, minus, 2, a, minus, 4, right parenthesis, plus, 3, a? Choose all answers that apply: Choose all answers that apply: (Choice A) A - 6a-12+3a-6a-12+3aminus, 6, a, minus, 12, plus, 3, a (Choice B) B 3a+123a+123, a, plus, 12 (Choice C) C None of the above

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Answers (2)
  1. 9 June, 08:21
    0
    -6a-12+3a

    Step-by-step explanation:

    I did the khan academy test
  2. 9 June, 08:57
    0
    -6a^4-9a^3-6a-12

    Step-by-step explanation:

    3 (-2a-4) + 3a^3 (-2a-4) + 3a^3

    -6a-12-6a^4-12a^3+3a^3

    -12a^3+3a^3-6a^4-6a-12

    -9a^3-6a^4-6a-12

    -6a^4-9a^3-6a-12
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