Question

[(4)^-1-(5)^-1]^2×(5/8)^-1​

Answer 1

Answer:

Step-by-step explanation:

4^-2 * 5^-2 * 5^-1 * 8^1

= 4^(-2 +1) *5^(-2-1) * 2

= 4^-1 * 5^-3 * 2

= 2^-1

= 1/250