Question

5 √5^(-2/3)-81^-0,25

Answer 1

Условие задачи не понятно, если нужно было упростить, то так

Answer 2

Let's break down the expression and simplify it using the laws of exponents:

1. First, we can simplify √5^(-2/3) as follows:

   √5^(-2/3) = 5^(-2/3)^(1/2) = 5^(-1/3)

2. Next, we can simplify 81^-0.25 as follows:

   81^-0.25 = (3^4)^-0.25 = 3^(-4*0.25) = 3^-1

Now we can substitute these simplified expressions back into the original expression and simplify further:

5^(-1/3) - 3^-1 = 1/5^(1/3) - 1/3

To simplify this expression further, we can multiply the numerator and denominator of the first fraction by 5^(2/3) to get a common denominator:

1/5^(1/3) = 5^(2/3)/5

Now we can substitute this expression back into the original expression and simplify further:

5^(2/3)/5 - 1/3 = (5^(2/3) - 3)/15

Therefore, the simplified expression is (5^(2/3) - 3)/15.