Question

(m+3)^2+(3m-1)(3m+1)

Answer 1

( m + 3)^2 + (3m - 1)(3m + 1)= m^2 + 6m +9 + 9m^2 - 1 = 10m^2 + 6m + 8 =
= 2(5m^2 + 3m + 4)

Answer 2

 (m+3)²+(3m-1)(3m+1)=m²+6m+9+9m²-1=10m²+6m+8