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4 June, 16:19

Perform the indicated operation. (9x3 - 4x2 + 2x + 3) + (-5x3 + 7x2 - 6x + 5)

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  1. 4 June, 16:57
    0
    First remove the 2 sets of parentheses. The signs of the terms in the second parentheses will stay the same because the sign in front is positive. So we have:-

    9x^3 - 4x^2 + 2x + 3 - 5x^3 + 7x^2 - 6x + 5

    = 4x^3 + 3x^2 - 4x + 8
  2. 4 June, 19:53
    0
    The answer i got by simplifying it is 24-4x.
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