What type of number can be written in the form $a+bi$a+bi?
A whole number
A rational number
A complex number
A real number
What is a pure imaginary number?
Answer the following.
Consider the complex number $-i\sqrt{10}$−i√10.
Know there is a complex number I such that i^2 = -1, and every complex number has the form a bi with a and b real.
Use the relation i^2 = -1 and the commutative, associative, and distributive properties to add, subtract, and multiply complex numbers.