All of the following expressions have the same value except . -16 ÷ 2
(2)(-4)
(-2)(4)
-16 ÷ -2

All of them have the same answer of -8 except the last one.

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.