Expand: Expand is when we multiply to remove the bracket.      

Factorise: Finding what to multiply to get an expression.      

Quadratic: Where the highest exponent of the variable is a square. 

Identity: An identity is an equation which is always true, no matter what values are substituted.  

Equation: An equation says that two things are equal. It will have an equal sign =. 

Expression: Numbers, symbols and operators (such as + and x) grouped together that show the value of something.