In the question, the given expression is

And we have to find the equivalent expression to the given expression .
First we remove the parenthesis

Now we combine the like terms, and here like terms are z and z, therefore on combining , we will get

And that's the required equivalent expression .
This is the concept of algebra, we are required to subtract the complex numbers. Thus;
(5-2i)-1(1+8i)
opening the brackets using the distributive property we get:
5-2i-1-8i
collecting the like terms we get:
5-1-2i-8i
=4-10i
the answer will therefore be:
4-10i
I’m not sure how but I’m pretty sure that’s slope formula
Answer:
See below
Step-by-step explanation:
The three numbers in the set have to sum to 180 degrees
If the first choice is 19 70 91 that would be it