SOLUTION: Directions: Simplify the following- 1. 7i^5-8i^4+5i^3-4i^2 2. 6i^4-(3i-7)-8i^2+(4-15i) 3. (6i-7)(7i-6) 4. (8i-6)/2i 5. (10-9i)/(5-3i) Hello, I am having trouble

Question 397890: Directions: Simplify the following-
1. 7i^5-8i^4+5i^3-4i^2
2. 6i^4-(3i-7)-8i^2+(4-15i)
3. (6i-7)(7i-6)
4. (8i-6)/2i
5. (10-9i)/(5-3i)

Hello, I am having trouble with these complex numbers problems on my practice test. The real test is next monday but I really don't feel prepared. Any help is greatly appreciated!

Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
1.
........(i^2=-1)

5. ........multiply nominator and denominator by

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