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

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Question 255738: a. Simplify the following expressions. (-1)^1, (-1)^2, (-1)^3, (-1)^4, (-1)^5/
b. What is the sign of the final answer when the exponent is odd? When the exponent is even?
c. Use your answer from part (b) to simplify (-1)^19.
Found 2 solutions by checkley77, richwmiller:
Answer by checkley77(12844) (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
(-1)^19=-1 if the power is odd the answer is -1.

Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website!
1 times 1 is 1 the only question is which sign.
When the number (-1) is raised to an even power (exponent) the sign is positive and when the power is odd the sign is neqative.