Question

$(7k - 3)(k^{2} - 2k + 1)$

Explanation:

Step1: Expand using distributive property

$7k(k^2 - 2k + 1) - 3(k^2 - 2k + 1)$

Step2: Distribute terms individually

$7k^3 - 14k^2 + 7k - 3k^2 + 6k - 3$

Step3: Combine like terms

$7k^3 + (-14k^2 - 3k^2) + (7k + 6k) - 3$

Answer:

$7k^3 - 17k^2 + 13k - 3$