1927 - The "Bureau of Chemistry" is reorganized into two separate entities. Regulatory functions are located in the "Food, Drug, and Insecticide Administration", and nonregulatory research is located in the "Bureau of Chemistry and Soils".
1930 - The name of the "Food, Drug, and Insecticide Administration" is shortened to "Food and Drug Administration" (FDA) under an agricultural appropriations act.
... of b/(2a) to both sides, getting
<math>x^2+\frac{b}{a}x+\frac{b^2}{4a^2}=-\frac{c}{a}+\frac{b^2}{4a^2}.</math>
The left side is now a perfect square; ...