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12 May, 12:40

Simplify (x^4-9x+5x^7) + (5x-10+3x^4-2x^2)

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  1. 12 May, 13:18
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    5x^7 + 4x^4 - 2x^2 - 4x - 10.

    Step-by-step explanation:

    (x^4 - 9x + 5x^7) + (5x - 10 + 3x^4 - 2x^2)

    = x^4 - 9x + 5x^7 + 5x - 10 + 3x^4 - 2x^2

    Combine like terms:

    = 4x^4 - 4x - 2x^2 + 5x^7 - 10

    Now rearrange to standard form (in decreasing degree):

    = 5x^7 + 4x^4 - 2x^2 - 4x - 10.
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