When factoring a quadratic expression with four terms, the results should be the product of two terms by two terms. why is the final result when you factor a quadratic expression of three terms also a product of two binomials?

The  pan-african movement  was an "emotional, cultural, psychological and ideological  movement  that began among the  african  dispora in the western hemisphere, for a closer  purpose, so that  african  people could feel secure, attain political, economic as well as psychological power visa vis other races or world regions" .

D. by limiting the types of goods produced.