Question

Which of the following is the best definition of a complex number?

A. The set of all numbers in the form a+bi, where a and bare real numbers and equals -1
B. The set of all numbers in the form a-bi, where a and bare real numbers and equals 1 i
C. The set of all numbers in the form a+bi, where a and b are imaginary numbers and i equals 1
D. The set of all numbers in the form a+bi, where a and b are real numbers and equals 1 ​

Answer 1

D

Explanation:

the numbers are expressed in the form of a+ ib where ab are real numbers and I is an imaginary number called iota