(Reuters) - Xerox Corp on Thursday threatened to take its $33.5 billion (£26 billion) buyout bid for HP Inc hostile, if the personal computer maker did not agree to a "friendly" discussion before Nov. 25.HP on Sunday rejected Xerox's offer of $22 per share, saying it undervalued the company, and that it was open to exploring a counter bid for the U.S. printer maker."We are confused by this reasoning in that your own financial adviser, Goldman Sachs & Co, set a $14 price target with a 'sell'..