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Completing the Square

Completing the Square Algebra Quadratic Equations and Inequalities Solving Quadratics by Factoring Completing the Square The Quadratic Formula All Signs Point to the Discriminant Solving One-…

Dividing Polynomials

Dividing Polynomials Algebra Introducing Polynomials Classifying Polynomials Adding and Subtracting Polynomials Multiplying Polynomials Dividing Polynomials There are two techniques you can…

Anatomy and
Physiology: Stops Along the Way

Stops Along the WayAnatomy and PhysiologyThe Digestive SystemStops Along the WayIt's a Long Way DownJack-of-All-TradesRunning Along the TractPancreatic Panacea?What We Do with Our Food In order…

Chemistry: Equilibrium Constants

Equilibrium ConstantsChemistrySolution Chemistry/emical EquilibriaWhat Is an Equilibrium?Equilibrium ConstantsHeterogeneous EquilibriaDisturbing Equilibria: Le Chtelier's Principle All equilibria…

Mortals on Mount Olympus

  A history of climbing Mount Everest   by Borgna Brunner   Sir Edmund Hillary poses with Sherpa climber Tenzing Norgay at Everest base. Climbers who die on the mountain are…

The Journals of Lewis & Clark: May 25, 1805

by Meriwether Lewis and William Clark May 24, 1805May 26, 1805May 25, 1805 Saturday May 25th 1805. The Two canoes which we left behind yesterday to bring on the meat did not arrive…

The Journals of Lewis & Clark: July 27, 1805

by Meriwether Lewis and William Clark July 26, 1805July 28, 1805July 27, 1805 Saturday July 27th 1805. We set out at an early hour and proceeded on but slowly the current still so…

The Legislative Branch

The Capitol's iconic dome was added in the 1850s. It stands nearly 300 feet tall, and weighs nearly 9 million pounds.Read current and historical biographies of every U.S. congressional member. Find…