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9 January, 13:31

Which expression shows the correct multiplication of the following polynomilas? 3x (6x^2-3x+7)

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  1. 9 January, 16:43
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    Answer: 18x^3-9x^2+21x

    Solution:

    3x (6x^2-3x+7) =

    Applying the distributive property in the multiplication to eliminate the parentheses:

    (3x) (6x^2) + (3x) (-3x) + (3x) (7) =

    (3*6) x^ (1+2) + 3 * (-3) x^ (1+1) + (3*7) x=

    18x^3-9x^2+21x
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