Would you be able to (do something)?
This is a rather polite way to ask someone to do something. It's polite because the phrase "would you" is less direct than "Can you" or "Will you". You ask "Would you be able to ___" when you're asking someone to do something that is a bit inconvenient:
Would you be able to give me a ride home after work tomorrow?
Would you be able to send it to me by two this afternoon?