An integer N is a perfect cube if N can be written as a product of three equal integers. If N = m x m x m. we say N is the cube of m and write N = m3
m3 is read as cube of m or simply m-cube.
For example,
1 = 1 x 1 x 1 = 13
8 = 2 x 2 x 2 = 23
27 = 3 x 3 x 3 = 33
(-4) x (-4) x (-4) = -64 = (-4)3
(-5) x (-5) x (-5) = -125 = (-5)3
