last na po ito badly need help lang po please

Answer:
3.2
p(-1)=12x³+10x²+5x+1
P(-1)=12(-1)³+10(-1)²+5(-1)+1
P(-1)=12(-1)+10(1)-5+1
P(-1)=-12+10-5+1
P(-1)=-6
r. is -6
Step-by-step explanation:
Hope it can help(-: