Square Root and Cube Root

1. Square Root:

   If x² = y, we say that the square root of y is x and we write y = x.

   Thus, 4 = 2, 9 = 3, 196 = 14.

2. Cube Root:

   The cube root of a given number x is the number whose cube is x.

   We, denote the cube root of x by x.

   Thus, 8 = 2 x 2 x 2 = 2, 343 = 7 x 7 x 7 = 7 etc.

   Note:

   1. xy = x x y

   2.	x y	=	x	=	x	x	y	=	xy	.
   			y		y		y		y