If x is one side of a square, x times x or x squared is the area of a square.
Its the square root of 2 times x Ambiguous. More clear is x times square root of 2
SQRT(X) * SQRT(X) = X
729 does not have "a square root of 3 times 3 times 3 times 327" so the question does not arise. 729 is a square number with a square root of 3 x 3 x 3 because (3 x 3 x 3) x (3 x 3 x 3) = 729
square root of 4x is 2 times square root of x, so answer is square root of x times 3 since it is 2 square roots of x plus one of them
200 times the square root of x
b square times a square = b2 x a2 = (ba)2
on these problems you have o say it out to figure it out three times 3times something the square of a number x so the answer is 3x2
2.5 x 4 x 25 = 250
"Radical x times radical x" could be interpreted as the square root of x times the square root of x - in which case the product would be x (the number under the radical sign)
Your question does not make sense.
(1/8)(x-sin 4x)