Imaginary Numbers

Front

What is an imaginary number?

Back

An imaginary number is a number that can be written as a real number multiplied by the imaginary unit 'i', where i is defined as the square root of -1.

Front

What is the value of √-1?

Back

i

Front

Simplify √-4.

Back

2i

Front

Simplify √-45.

Back

3i√5

Front

What is the imaginary unit 'i'?

Back

The imaginary unit 'i' is defined as √-1.

Front

Simplify √-28.

Back

2i√7

Front

Simplify √-23.

Back

i√23

Front

What is the relationship between real numbers and imaginary numbers?

Back

Real numbers can be represented on a number line, while imaginary numbers are represented on a perpendicular axis, forming the complex plane.

Front

What is a complex number?

Back

A complex number is a number that has a real part and an imaginary part, expressed in the form a + bi, where a is the real part and b is the imaginary part.

Front

How do you add complex numbers?

Back

To add complex numbers, add their real parts and their imaginary parts separately.