Uber submitted a formal €13 billion offer to acquire Delivery Hero. The move appeared in a filing with investors. The aim is to expand Uber’s services beyond solely ride-hailing. Delivery Hero agreed and described the plan as part of its own effort to branch out. Bosses mentioned plans to combine food delivery with ride-hailing, but gave few updates on savings. Analysts cautioned the scale of the deal could create problems. They cited to tough merging and doubts over whether the valuation is fair.