January 1 - RCA victor announces a marketing plan called "Operation TNT." The label drops the list price on LP's from $5.95 to $3.98, EP's from $4.95 to $2.98, 45 EP's from $1.58 to $1.49 and 45's from $1.16 to .89 cents. Other record labels follow RCA's lead and begin to drop prices as well.
... 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; it is the ...