Question

What are the real and imaginary parts of the complex number?

2−5i




The real part: ?

The imaginary part: ?

Answer 1

Explanation:

Using the standard form you will see that:

The real part is 2

The imaginary part is -5i

Answer 2

The real part is 2

The imaginary part is -5

Explanation:

A complex number consists of a real part and an imaginary part. For example given the complex number z = x+it

x is the real part of the complex number z i.e Re(z) = x

Imaginary part of the complex number z is y i.e Im(z) = y.

Note that the real part are on the x axis of a graph while the y axis is the imaginary axis attached to the complex notation i

Given the complex number 2-5i

Comparing 2-5i to x+iy

x= 2 and y = -5

The real part is 2 (value that is not attached to the complex notation)

The imaginary part is 5(value attached to the complex notation)