May 3 - Anti-war militants attempt to disrupt government business in Washington, D.C.; police and military units arrest as many as 12,000, most of whom are later released.
August 9 - British security forces in Northern Ireland detain hundreds of guerilla suspects and put them into Long Kesh - the beginning of an internment without trial policy. 20 die in riots that follow
November 24 - "D.B. Cooper" hijacks a plane with alleged bomb, demands and gets a ransom of $200,000 and parachutes out over the Cascade Mountains. Never caught.
... a being non-zero. These solutions are also called the roots of the equation. The formula reads
<math>
x=\frac{-b \pm \sqrt {b^2-4ac}}{2a}
</math>
The ...