You’ve come a long way, baby : women, politics, and popular culture / edited by Lilly J. Goren. (OCLC #642464862)

I’d never considered contractions like “you’ve” to warrant assigning a variant title (RDA 2.3.6) with the contraction expanded, as has been done in this record:

    245 00 ǂa You've come a long way, baby : ǂb women,
        politics, and popular culture / ǂc edited by Lilly 
        J. Goren.
    246 3_ ǂa You have come a long way, baby

That said, I don’t see an RDA rule encouraging variant titles for spelling out numerals or abbreviations. Maybe they are generally referenced under c, “assigned by the creator or by previous owners or custodians of the resource”.