Write an expository essay which is an informative piece of writing that presents a balanced analysis of a topic. In an expository essay, the writer explains or defines a topic, using facts, statistics, and examples. Expository writing encompasses a wide range of essay variations, such as the comparison and contrast essay, the cause and effect essay, and the how to or process essay. Because expository essays are based on facts and not personal feelings, writers dont reveal their emotions or write in the first person.