If you have pointl(4,3) and (1,1) on a graph move them so they so the do not coincide and both lie on graph of f-g. fx)=x-1 g(x)=-x-2

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.