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Home->Aptitude->Surds and Indices -> Important Formulas

Surds and Indices :-

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IMPORTANT EXAMPLES
::Important Formulas

Here Some Basic Formulas/Rules Are given below :-

  1. LAWS OF INDICES :
    1. am x an = am+n

    2.   am = am-n
         an
    3. (am)n = amn

    4. (ab)n = an bn

    5.(a/b)n = an 
                   bn

    6. a0 = 1

  2. SURDS : Let a be a rational number and n be a positive integer such that
    a1/n = na is irrational. Then, na is called a surd of order n.

  3. LAWS OF SURDS :
    1. na = a1/n

    2. nab = na X nb

    3. na/b = na  

                  nb

    4. (na)n = a

    5. (na)m = nam

Click Here for Important Examples