Question

PLEASE HELP!!
You need to factor by grouping.
Please explain the steps!

Answer 1

3(k-4)(7k^2+5)

Explanation:

1) Factor out GCF

3(7k^3-28k^2+5k-20)

2)Split into two

3) Factor

3*7k^2(k-4)+5(k-4)

3(k-4)(7k^2+5)