Answer: 1/5
Explanation:
In this case, you multiple the exponents together because you are raising a power to a power:
25^(-3/2 * 1/3)
25^(-3/6)
25^(-1/2)
Next, when the power is negative, we can get rid of it by changing the whole number to its reciprocal (divide the number by one):
1/(25^(1/2))
Now, when an exponent is a fraction, the numerator is what the base is raised to and the denominator is what the base is rooted to:
1/(sqrt(25))
Now, simplify:
1/5