Simplify and write the answer with positive exponents Simpli

Simplify and write the answer with positive exponents

Simplify and write the answer with positive exponents (4/5)^8(4/5)^-5(4/5)^-4

(4/5)^8(4/5)^-8(4/5)^-4

we can use the exponent property : a^x*a^y =a^(x+y)

So, (4/5)^8(4/5)^-8(4/5)^-4 = (4/5)^(8-5-4)

= (4/5)^(-1)

use another exponent property .So,

= (4/5)^(-1) = 5/4

=5/4