Can someone help pls!! For which intervals is the function decreasing?

Select each correct answer.

(2, ∞)

(1, 2)

(0, 1)

(−∞, 0)

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

Answer: caught punk xd