Rationalising an expression means getting rid of any surds from the bottom (denominator) of fractions. Usually when you are asked to simplify an expression it means you should also rationalise it.

As the war grinds on, sophisticated Russian defenses have pushed Ukraine to develop a frightening new weapon: semiautonomous ...

Americans are paying luxury prices for basic entertainment, and a big chunk of that money is going to channels they never ...

In most agencies, 80% of revenue is generated by only 20% of their accounts, meaning that 80% of an agency's customer base is ...

Holdings from the library at the Goddard Space Flight Center, which includes unique documents from the early 20th century to the Soviet space race, will be warehoused or thrown out. By Eric Niiler Our ...