Using trial and error with numbers for a, b, and c, create an equation of the form x + a = Sqrtbx + C, where a, b, and care all positive integers and b > 1 such that 7 is a solution. (Hint: Substitute 7 for x,

and choose a value for a. Then square both sides so you can choose a, b, and c that will make the

equation true.)