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10 April, 15:19

Find the difference (3-13x-7x^2) - (5x^2 + 12x-10)

A.-12x^2-25x-7

B.-12x^2-25x+13

C.-12x^2-x-7

D. 3x^2-25x-2

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Answers (1)
  1. 10 April, 18:01
    0
    3 - 13x - 7x^2 - (5x^2 + 12x - 10)

    Distributing the negative over the parentheses chamges the signs:-

    = 3 - 13x - 7x^2 - 5x^2 - 12x + 10

    adding like terms:-

    = - 12x^2 - 25x + 13 (answer).

    Its B
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