17. Which is a pair of equal expressions? A. Sy + 6 and 6y + 9 B. 7x- 3 and 3-7x C. 2y x 4 and 2 x 4y D. 5x - 10 and 5(2-x)​

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.