Simplify the Radical Expression as Much as Possible

Q38: All variables in the problem below represent

Q39: Assume the variable is positive, and find

Q40: Simplify each term, if necessary, and then

Q41: Solve the equation by applying the squaring

Q42: Simplify the radical expression as much as

Q44: Solve the equation by applying the squaring

Q45: Solve the equation by applying the squaring

Q46: Use combinations of properties 1 and 2

Q47: Assume all variables are positive, and find

Q48: Put the radical expression into simplified form.