destineyetters destineyetters

12-07-2020
Mathematics

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(7k-4)(7k^2+4k-1) mulityply the polynomials

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sqdancefan sqdancefan

12-07-2020

Answer:

49k^3 -23k -4

Step-by-step explanation:

The distributive property is your friend.

[tex](7k-4)(7k^2+4k-1)=7k(7k^2+4k-1)-4(7k^2+4k-1)\\\\=49k^3+28k^2-7k-28k^2-16k+4\\\\=49k^3+k^2(28-28)+k(-7-16)-4\\\\=\boxed{49k^3-23k-4}[/tex]

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