SIMPLIFICATION IMPORTANT CONCEPTS

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 a given expression.

Here’d’ stands for ‘Bracket, ‘O’ for ‘of’, ‘D’ for ‘division’, ‘M’ for ‘Multiplication’, ‘A” for ‘addition’ and ‘S’ for ‘subtraction’.

After moving the brackets, we must use the following operations strictly in the order:

2.      Modulus of a Real Number: Modulus of a real number a is defined as

           |a| =        a, if a > 0

                  -a, if a <0.

                  Thus, |5| =5 and \ - 5| = -5) = 5.

3.      Virnaculum ( or bar): when an expression contains Virnaculum, before applying the ‘BODMAS’ rule e simplify the expression under the Virnaculum.