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23-06-2017
Mathematics

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(7u^3-u^2)+(2u^3-4u^2+2)

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Banabanana Banabanana

23-06-2017

(7u³-u²)+(2u³-4u²+2) =
7u³-u²+2u³-4u²+2 =
9u³-5u²+2

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23-06-2017

(7u^3-u^2)+(2u^3-4u^2+2)
(7+2)u^3+(-1+-4)u^2+2
=9(u^3)-5(u^2)+2

Answer Link

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