Which of the following commands can I use to get the square roots of the numbers -3 and 3 ?

		x = [-3 3] roots = x.^0.5
		x = [-3 3] roots = x^0.5
		x = [-3 3] roots = nthroot(x,2)
		x = [-3 3] roots = sqrt(x)

multiple answers may be true please select all that are true