Expressions, Equations, Formula And Identity Flashcards
1
Q
What is an Expression?
A
A mathematical phase that can contain numbers, variables (x,y, etc) and operators (+,-,etc).
2
Q
What is identity?
A
An identity is an equality that holds true regardless of the values chosen for its variables.They are used in simplifying or rearranging algebra expressions. By definition, the two sides of an identity are interchangeable, so we can replace one with the other at any time. For example, the identity is true for all choices of and , whether they are real or complex numbers.
3
Q
What is a formula?
A
A rule or principle, frequently expressed in algebraic symbols.
4
Q
What is an Equation?
A
An equation is when 2 expressions are equal but are not identity or a formula.
