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22 November, 22:56

Find (3a2 - 2a + 4) - (a2 - 3a + 7).

A. 2a^2 + a - 3

B. 2a^2 - 5a + 11

C. 4a^2 - 5a + 11

D. 4a^2 + a - 3

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Answers (1)
  1. 22 November, 23:21
    0
    (3a^2 - 2a + 4) - (a^2 - 3a + 7) = (distribute the negative sign)

    3a^2 - 2a + 4 - a^2 + 3a - 7 = (add like terms)

    2a^2 + a - 3

    So, the answer is A!
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