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Simplification

  1. 'BODMAS' Rule: This rule depicts the correct sequence in which the operations are to be executed, so as to find out the value of given expression. Here B - Bracket,
    O - of,
    D - Division,
    M - Multiplication,
    A - Addition and
    S - Subtraction Thus, in simplifying an expression, first of all the brackets must be removed, strictly in the order (), {} and ||. After removing the brackets, we must use the following operations strictly in the order: (i) of (ii) Division (iii) Multiplication (iv) Addition (v) Subtraction.
  2. Modulus of a Real Number: Modulus of a real numberais defined as
    |a| = a, ifa> 0
    -a, ifa< 0
    Thus, |5| = 5 and |-5| = -(-5) = 5.
  3. Virnaculum (or Bar): When an expression contains Virnaculum, before applying the 'BODMAS' rule, we simplify the expression under the Virnaculum.



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