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23 June, 12:27

Simplify the expression below. (-3x2 + 2x - 4) + (4x2 + 5x + 9)

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Answers (2)
  1. 23 June, 13:26
    0
    x^2+7x+5

    Step-by-step explanation:

    Remove parentheses: - 3x^2+2x-4+4x^2+5x+9

    Group like terms: - 3x^2+4x^2+2x+5x-4+9

    Add similar elements: x^2+2x+5x-4+9

    Add/subtract the numbers: x^2+7x+5
  2. 23 June, 15:37
    0
    Answer: = x2+7x+5

    Step-by-step explanation:

    -3x2+2x-4+4x2+5x+9

    =-3x2+2x+-4+4x2+5x+9

    Combine Like Terms:

    =-3x2+2x+-4+4x2+5x+9

    = (-3x2+4x2) + (2x+5x) + (-4+9)

    =x2+7x+5

    Answer:

    =x2+7x+5
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