用matlab求（a+b)^2(b+c)^3 它的a^2bc^3的系数

syms a b c;
exedSym = expand((a+b)^2*(b+c)^3);
answer =subs(subs(subs(subs(exedSym, a^2*b*c^3, 1),a,0), b, 0), c, 0);

题目有问题吧，没有这一项a^2 b c^3
补充：
把楼下的改进一下
syms a b c;
p=(a+b)^2*(b+c)^3;
t=a^2*b*c^3;
answer =subs(subs(expand(p),t,1),{a,b,c},{0,0,0})