Formal:
* The project demanded a multifaceted approach, requiring expertise in both engineering and marketing.
* The novel explores the multifaceted nature of love, encompassing its joys, sorrows, and complexities.
Informal:
* She's a multifaceted individual, a talented artist, a skilled chef, and a dedicated mother.
* The problem is multifaceted, with no easy solutions.
Creative:
* The diamond's multifaceted brilliance reflected the kaleidoscope of emotions swirling within her.
* His multifaceted personality shone through in the diverse roles he played on stage.
Remember to choose the sentence that best suits the context and tone of your writing.