打戊肝疫苗有副作用吗:出一数学题

来源:百度文库 编辑:高校问答 时间:2024/05/11 01:03:49
(-1/3p+1/2Q)(-2/3p-1/4q^2)

(-1/3p+1/2Q)(-2/3p-1/4q^2)
=2/9p^2+1/12pq^2-1/3pq-1/8q^3