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Square Root and Cube Root - Important Formulas |Aptitude

  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=xxy=xy.
    yyyy

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