The First of Seven Problems - Easy Rage

Between today and tommorow hopefully I can get 7 problems written.The first and last will be easy/hard rage problems while 2-6 will be easy record.The 1st problem is as follows.The last one I had to do more than 2 hours of thinking for so good luck with that.The score(in percent I got on my science quiz(sademoji)) is ${10}{n}$ , where ${n}$ is ${4}{a}{m}$ .The expansion of $({x}+1)^{p}=0$ will result in the quantity y being equal to $a^{{m}{p}}$ .If ${b}$ is the number of roots of the polynomial expansion(r sub i are the roots) then y = | $\sum_{i=1}^{b}{r}_{i}$ | +(| $\sum_{i=2}^{b}{{r}_{1}}*{{r}_{i}} + (\sum_{i=3}^{b}{{r}_{2}*{{r}_{i}}}$ ...etc|)) ............etc( absolute value of sum of product of roots taken in all possible amounts in all ways).Find the score I got on my science test. Note that each product of n roots together term has the absolute value bars around it.