much depends on individual tastes and also the type of dish ordered - food quality can vary more than in a typical restaurant - a place may be good for burgers and breakfast but not great for filet of salmon. the safe bet is to go with simple, low risk, "standard" fare. 𝑏. so the square root of 𝑥 squared is 𝑥, and the square root of 16 is four.
so 𝑥 squared minus 16 can be replaced with 𝑥 plus four 𝑥 minus four, and then we bring down the 𝑥 plus two. so this would be our final answer. 