2.在等比数列{an}\{a_{n}\}{an}中,a1=1a_{1}=1a1=1,a2a3=8a_{2}a_{3}=8a2a3=8,则a4+a5a1+a2=(\frac{{a}_{4}+{a}_{5}}{{a}_{1}+{a}_{2}}=(a1+a2a4+a5=( )))