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19 March, 17:34

Will mark brainliest if right and show your work ...

What is the sum of the polynomials?

(9x^4-13x^3-x-7) + (7x^3-2x+1)

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  1. 19 March, 17:47
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    9x^4 - 6x^2 - 3x - 6

    (9x^4-13x^3-x-7) + (7x^3-2x+1)

    Sort the terms by their powers, as x's with the same powers can be added together:

    9x^4

    -13x^3 + 7x^3 = - 6x^3

    -x - 2x = - 3x

    -7 + 1 = - 6

    9x^4 - 6x^2 - 3x - 6
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