Simplify sqrt(x*sqrt(x*sqrt(x))). Express your answer in simplest radical form in terms of x
x sqrt (x) = x^(1 +1/2) = x^(3/2)
sqrt (x * sqrt (x)) = sqrt (x^3/2) = (x^3/2)^(1/2) = (x^3/4)
x * [sqrt (x *sqrt (x) ] = x* x^(3/4) = x ^(1 + 3/4) = x^(7/4)
sqrt [ x * [sqrt (x *sqrt (x)] ] = (x^7/4)^(1/2 ) = x^(7/8)