lksejkdkj5085 lksejkdkj5085 20-07-2018 Mathematics contestada Simplify. Express the answers using positive exponents -2a^2b^4/4ab^-8 a ≠ 0 b ≠ 0 Answers: - 1/2 ab^12, - 1/2 ab^-12, - a/2b^4, - a/2b^-4