a) [tex]3a(4-2a)+2a(3a-5)=12a-6a^2+6a^2-10a=2a=6[/tex]
b)[tex]4p(5+3p)-2p(7+6p)=20p+12p^2-14p-12p^2=6p=-12[/tex]
c)[tex]-3m(6m+5)-9(-m-2)=-18m^2-15m+9m+18=-18m^2-16m+18=-16[/tex]
