Gather the m's and n's by rewriting it. 7m - 11n - n + 5m 7m + 5m -11n - n (7m + 5m) + (-11n - n) 12m - 12n ■
11n - 12n + 3 = 3 - n
14M + 2n - 6M + 11n = 8M + 13n
16n
3m + 11n = 3
It is: 16n
Assuming you mean n2 + 11n + 30, the factors are (n + 6)(n + 5).
12m + 3n - 6m + 7n6m + 10n
6n + 5n is 11n.
m2 + 12m + 20 = ( m + 2)(m + 10)
12m + 9n - 4 - 10m + 6n = 2m + 15n - 4
n2 + 11n + 18 = n2 + 2n + 9n + 18 = n(n+2) + 9(n+2) = (n+9)*(n+2)