Question

Which of the following is a complex number?

Answer 1

4+9i

Explanation:

A number which can be represented or expressed in the form a + bi is said to be a complex number. Here, a and b are the real numbers and i is the solution of an equation (
`x^(2) =-1`).

Moreover, i used in the complex number is called an imaginary number as real number can satisfy the above mentioned equation.

Therefore, the correct answer option is 4+9i.

Answer 2

4+9i

Explanation:

A complex number has a real and imaginary component to it

It is in the form a+bi