SOLUTION: 1. Simplify the following expressions. (-1)^1,(-1)^2,(-1)^3,(-1)^4,(-1)^5 2. What is the sign of the final answer when the exponent is odd? When the exponent is even? 3. Use you

Algebra ->  Expressions-with-variables -> SOLUTION: 1. Simplify the following expressions. (-1)^1,(-1)^2,(-1)^3,(-1)^4,(-1)^5 2. What is the sign of the final answer when the exponent is odd? When the exponent is even? 3. Use you      Log On


   

Question 256541: 1. Simplify the following expressions.
(-1)^1,(-1)^2,(-1)^3,(-1)^4,(-1)^5
2. What is the sign of the final answer when the exponent is odd? When the exponent is even?
3. Use your answer from part (b) to simplify (-1)^19
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
(-1)^1,(-1)^2,(-1)^3,(-1)^4,(-1)^5
-1, 1, -1, 1, -1
ALL EVEN POWERS RESULT IN A POSITIVE NUMBER.
ALL ODD POWERS RESULT IN AN ODD NUMBER.
THEREFORE (-1)^19=-1 BECAUSE 19 IS AN ODD POWER.