PHILADELPHIA--(BUSINESS WIRE)--Comcast Corporation (NASDAQ: CMCSA, CMCSK) today reported results for the quarter ended March 31, 2015. Brian L. Roberts, Chairman and Chief Executive Officer of Comcast Corporation, said, “We are off to a great start in 2015, with 7.6% operating cash flow growth and record quarterly free cash flow. Cable had a terrific quarter, once again reflecting strong results in high-speed Internet and business services. We have made progress in transforming the customer exp