What is expand (7k-3)(k^2-2k+1) ?

The solution to expand (7k-3)(k^2-2k+1) is 7k^3-17k^2+13k-3

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

expand

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

7 k^{3} - 17 k^{2} + 13 k - 3

Solution steps

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

Distribute parentheses

= 7 k k^{2} + 7 k (- 2 k) + 7 k \cdot 1 - 3 k^{2} - 3 (- 2 k) - 3 \cdot 1

Simplify

7 k k^{2} + 7 k (- 2 k) + 7 k \cdot 1 - 3 k^{2} - 3 (- 2 k) - 3 \cdot 1 : 7 k^{3} - 17 k^{2} + 13 k - 3

= 7 k^{3} - 17 k^{2} + 13 k - 3

(2 x + 1)^{2} - (2 x - 1)^{2}

(x + y i) (x - y i)

2 x \cdot (- 4)

(- 1) + 5

\frac{7}{40}

What is expand (7k-3)(k^2-2k+1) ?
The solution to expand (7k-3)(k^2-2k+1) is 7k^3-17k^2+13k-3