Question

K(k + 1)(k + 2) – 3k(k + 1)

Need a step-by-step guide on how to factor this completely

Answer 1

Explanation:

k(k+1)(k+2) - 3k(k+1)

k and (k+1) are common to both terms.

k(k+1)(k+2) - 3k(k+1) = k(k+1)[(k+2) - 3] = k(k+1)(k-1)