Answer:
Therefore: sqrt(A + B) says add (A + B) and only then take the square root.
Step-by-step explanation:
You cannot simplify square root of sum but you may expand it to the Taylor’s series to a couple of terms and get good approximation in some range of values of A and B. For instance if A+B is a very small number then sqrt(A+B)=1/2(A+B)-1/4(A+B)^2+o(A+B). Where o(A+B) is infinitesimal function and you may ignore it.
