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9 December, 06:32

What is the product of and?

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  1. 9 December, 06:49
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    (k³+9k²+3) (7k²-5) =

    =k³·7k²+k³ · (-5) + 9k² · 7k²+9k² · (-5) + 3· 7k²+3· (-5) =

    =7k^5-5k³+63k^4-45k²+21k²-15=

    =7k^5+63k^4-5k³-24k²-15
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