第665题:计算
设aaa 、bbb 是实数,且有 a2=a+1a^2=a+1a2=a+1 ,b2=b+1b^2=b+1b2=b+1 ,a≠ba \ne ba≠b ,求 a5+b5=?a^5+b^5=?a5+b5=?