SOLUTION: another problem; help please thanks Find the difference: (1-9i)-(5-i^2-8i)

Algebra ->  Rational-functions -> SOLUTION: another problem; help please thanks Find the difference: (1-9i)-(5-i^2-8i)      Log On


   

Question 62937: another problem; help please thanks
Find the difference: (1-9i)-(5-i^2-8i)
Answer by praseenakos@yahoo.com(507) About Me  (Show Source):
You can put this solution on YOUR website!
QUESTION:
Find the difference: (1-9i)-(5-i^2-8i)
ANSWER:

We have the value i^2 = -1

So,

Remove the brackets first,


(1-9i)-(5-i^2-8i) = 1 - 9i - 5 + i^2 + 8i

= 1 - 9i - 5 + -1 + 8i
= 1 - 5 + -1 -9i + 8i
= -5 -1i

Which is the required answer.


Regards.
praseenakos@yahoo.co.in