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Subtraction and simplifying?

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(9x^4 + 3x^3 -2) - (5x^2 - 8x + 2)

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  1. = (9x^4 + 3x^3 - 2) - (5x^2 - 8x + 2)

    = 9x^4 + 3x^3 - 2 - 5x^2 + 8x - 2

    = 9x^4 + 3x^3 - 5x^2 + 8x - 4

    Answer: 9x^4 + 3x^3 - 5x^2 + 8x - 4


  2. (9x^4 + 3x^3 - 2) - (5x^2 - 8x + 2)

    = 9x^4 + 3x^3 - 2 - 5x^2 + 8x - 2

    = 9x^4 + 3x^3 - 5x^2 + 8x - 2 - 2

    = 9x^4 + 3x^3 - 5x^2 + 8x - 4


  3. combine like terms,.. those with the same exponents and variables.. 9x^4+3x^3-5x^2+8x-4

  4. 9x^4+3x^3-5x^2+8x-4
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