Question This is a very good question! If it were simply ##1/(sqrta+sqrtb)##, we would use the conjugate, and we would multiply by ##(sqrta-sqrtb)/(sqrta-sqrtb)##. Let’s try something like that and see if it works. (This is what we do with problems of kinds we have not seen before. Try something and see if it works.) ##1/(sqrt(2)+sqrt(3)+sqrt(5)) […]