Basic algebra formulas that you can revise anytime and anywhere

FORMULAS FOR BEGINNER (a+b) ^2= a^2+b^2+2ab (a+b) ^2= (a-b) ^2+4ab (a-b) ^2= a^2+b^2-2ab (a-b) ^2= (a+b) ^2-4ab a^2+b^2= (a+b) ^2-2ab a^2+b^2= (a-b) ^2+ 2ab a^2-b^2= (a+b) (a-b) (a+b+c) ^2= a^2+b^2+c^2+2(ab+bc+ac) (a-b-c) ^2= a^2+b^2+c^2-2(ab-bc+ac) (a+b) ^3= a^3+b^3+3ab(a+b) (a-b) ^3= a^3-b^3+3ab(a-b) a^3+b^3= (a+b) (a^2-ab+b^2) a^3-b^3= (a-b) (a^2+ab+b^2) a^4-b^4= (a^2-b^2) (a^2+b^2) = (a^2+b^2) (a+b) (a-b) a^5+b^5= (a+b) (a^4-a^3b+a^2b^2-ab^3+b^4) a^5-b^5= (a-b) (a^4+a^3b+a^2b^2+ab^3+b^4)

definition and Declaration



Definition is the place where variable is created (allocated storage).

Declaration is a place where nature (type) of variable is stated, but no storage is allocated.

Initialization means assigning a value to the variable.

Variables can be declared many times, but defined only once. Memory space is not allocated for a variable while declaration. It happens only on variable definition.

Variable declaration
syntax
data_type variable_name;

example
int a, b, c;
char flag;

Variable initialization
syntax
data_type variable_name = value;


example:

int a = 50;
char flag = 't';

These are the Concept of C programming . We'll be glad if you share your valuable information with us regarding this topic, then it will be a golden opportunity for all of us to improve ourselves and know more. Comment below!!

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