Question

multiply and simplify: 5^(-8)∙5^9

Answer 1

5^(-8) * 5^(9)
Use rules of exponents
5^(-8+9) = 5^1 = 5

Answer 2

is that the same if the the question is 5 to the -8 power times 5 to the 9th power?

Answer 3

Yes same answer