Question 325257
I'm assuming that it's supposed to be: {{{8a^3-2a^2-12a+3}}}



{{{8a^3-2a^2-12a+3}}} Start with the given expression



{{{(8a^3-2a^2)+(-12a+3)}}} Group like terms



{{{2a^2(4a-1)+(-12a+3)}}} Factor out the GCF {{{2a^2}}} from the first group.



{{{2a^2(4a-1)-3(4a-1)}}} Factor out the GCF {{{-3}}} from the second group.



{{{(2a^2-3)(4a-1)}}} Factor out {{{4a-1}}}



So {{{8a^3-2a^2-12a+3=(2a^2-3)(4a-1)}}}