Which expression simplified would leave you with a positive exponent when simplified in exponent form?

Question

-2(-3)^(2)
3^(-3)+3^(-4)
3^(2)(3^(-5))
(3^(-11))/(3^(-7))

Answer 1

The expression that would leave you with a positive exponent when simplified in exponent form is (3^(-11))/(3^(-7)).