+128407 10 ) 21k^3 + 18k^2 + 56k + 48
GCF of 21k^3 and 18k^2 = 3k^2
GCF of 56k and 48 = 8
So we have
3k^2 ( 7k + 6) + 8 (7k + 6) =
(7k + 6) (3k^2 + 8)
11) 42x^3 + 49x^2 - 36x - 42
GCF of 42x^3 and 49x^2 = 7x^2
GCF of -36x and -42 = -6
So we have
7x^2 ( 6x + 7) - 6(6x +7) =
(6x + 7)(7x^2 - 6 )
12) p^3 + 6p^2 - 3p - 18
GCF of p^3 and 6p^2 = p^2
GCF of -3p and - 18 = -3
So we have
p^2 ( p + 6) - 3(p + 6) =
(p + 6) ( p^2 - 3 )
