how to write complex numbers in standard form?

Question

im in math 1314

Answer 1

Hi, Brenda.

Here is an example to further explain:

Suppose you are asked to find the square root of -16.  Because there is a negative under the radical, we know we will get an i as part of the answer.  The square root of 16 is  ±4, so we have ±4i.  But this is not in standard form.  In standard form (as Roman said earlier), you need a real number part and an imaginary part.  Our answer for my example is 0 ± 4i  

Hope this helped.

Answer 2

In standard form, you write z = a+bi.

Here, Re(z) = a is the real part, and Im(z) = b, is the imaginary part.