HP 17" Intel i5 256GB Notebooks w/Office365


HP 17" Intel i5 256GB Notebooks w/Office365

Is the memory expandable? I notice some come with 12GB; Memory: 8GB DDR4
Is Office 365 included, mean free access for life? How does that work?
Is the keyboard backlit?

Thanks

Morning.
One year subscription to Office 365
Memory is not upgradeable
No backlit keyboard.