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13 November, 12:06

Find the difference (x^3-7x+4x^2-2) - (2x^2-9x+4) = ? x^3+? x^2+? x+?

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  1. 13 November, 12:15
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    =x3+2x2+2x-6

    Step-by-step explanation:

    x3-7x+4x2-2+-1 (2x2-9x+4)

    x3+-7x+4x2+-2+-1 (2x2) + -1 (-9x) + (-1) (4)

    x3+-7x+4x2+-2+-2x2+9x+-4

    x3+-7x+4x2+-2+-2x2+9x+-4

    (x3) + (4x2+-2x2) + (-7x+9x) + (-2+-4)

    x3+2x2+2x+-6
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