simplification

Number System

![[1000046852.jpg]]

BODMAS Rule

B: Brackets

O: Order of powers or roots

D: Division

M: Multiplication

A: AdditionS: Subtraction

Another way

![[1000046938.jpg]]

Modules Of Real Numbers

$\left| a \right| = a \quad \text{and} \quad \left| -a \right| = a$

Absolute Value

![[1000046940.jpg]]

Basic Formula

$(a±b)²=a²+b²±2ab$

$(a±b)³=a³±b³+3ab(b±a)$

$a³-b³ = (a-b)(a²+b²+ab)$

$a³+b³=(a+b)(a²+b²-ab)$