Simplification Important Formulas And Concept

Formulas And Concept

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.

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 number a is defined as

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.

Important Formula


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