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20 February, 17:36

Add. Your answer should be a polynomial in standard form. ( - 8 y 2 - 9 y) + (8 y 3 + 9 y 2 - 2 y) =

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  1. 20 February, 19:49
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    (-8 * y^2-9*y) + (8*y^3+9*y^2-2*y)

    first, remove extraneous parentheses (or distribute if negative)

    =-8 * y^2-9*y+8*y^3+9*y^2-2*y

    then group terms in decreasing degree of y (variable)

    =+8*y^3 - 8 * y^2+9*y^2 - 9*y-2*y

    simply expression by adding/subtracting similar terms

    =+8*y^3 + y^2 - 11*y

    to give the final answer.
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