Important Facts And Formulas Of Square Roots And Cube Roots

Important Facts And Formulas Of Square Roots And Cube Roots


  • Posted by  Rahul 
    28 Jan, 2012

    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.
    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 3√x.
    Thus, 3√8 = 3√2 x 2 x 2 = 2, 3√343 = 3√7 x 7 x 7 = 7 etc.
    Note:
    1.√xy = √x * √y
    2. √(x/y) = √x / √y = (√x / √y) * (√y / √y) = √xy / y

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