Respuesta :
one may note you're kinda missing the factors provided, but anyhow, it factors to
[tex]\bf 3a^2+6a-2a-4\implies (3a^2+6a)-(2a+4) \\\\\\ 3a(a+2)~~-~~2(a+2)\implies \stackrel{common~factor}{(a+2)}[3a-2][/tex]
[tex]\bf 3a^2+6a-2a-4\implies (3a^2+6a)-(2a+4) \\\\\\ 3a(a+2)~~-~~2(a+2)\implies \stackrel{common~factor}{(a+2)}[3a-2][/tex]
