An imaginary number is a number that, when squared, has a negative ... Knowledge of the exponential qualities of imaginary numbers is useful in the multiplication and division of imaginary numbers.

Multiplying and dividing two numbers with the same sign gives a positive answer and multiplying and dividing two numbers with different signs gives a negative answer. Links Play KS3 maths game!

This means they are made of both real numbers and the imaginary number i: the square root of negative 1. Remember, a square ...

The history of negative numbers is one of stops and starts. The trailblazers were the Chinese who by 100 BC were able to solve simultaneous equations involving negative numbers. The Ancient Greeks ...