BODMAS Rule
B -> Bracket
O -> Of (orders i.e. Powers and Square Roots, Cube Roots, etc)
DM -> Division and Multiplication (start from left to right)
AS -> Addition and Subtraction (start from left to right)
Thus to simplify an expression, solve the expression inside the brackets in the order (),{},[]
then apply i) Of ii) Division and Multiplication (start from left to right) iii) addition and subtraction (start from left to right)
e.g $(5+4)\times 6$
First solve inside ‘brackets’ i.e. $(5+4) = 9$, then $9\times 6 = 54$
Modulus of a real number
Modulus of a real number n is defined as
$|n|=\begin{cases}n, & if &n > 0\\-n, &if & n < 0\end{cases}$
Thus |5| = 5 and |-5| = - |-5| = 5
Virnaculum or Bar
When a question or an expression contains Virnaculum or bar, we first simplify the expression under the Virnaculum and then apply the BODMAS rule.
