Subtract 10y - 8 from By 8y– 3.

8y-3-10y-8
Group the like and unlike terms
8y-10y-3-8
-2y-11

I am only 13
Hope it helps

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.