What is the real number of "a" equals to? What is the real number of "b" equals to?

Guest Sep 2, 2020

#1**+2 **

First, we need to "rationalize" the denominator, but instead of square roots, we use 8i.

-1 - 4i / 8i (8i / 8i)

This is:

-1 - 4i / 8i (8i / 8i) = -1 - 4i ( 8i ) / 8i ( 8i) = - 1 - 4i ( 8i ) / - 8 = - 8i + 32 / - 8 = -8i / -8 + 32 / -8 = **-4 + i**

**Now you should very well know what a and b are.**

**:)**

ilorty Sep 2, 2020