Where is Afghanistan? GDP of Afghanistan; What is the Capital of Afghanistan? List of Airports in Afghanistan
Definition of expression for Students. 1  1 : the act or process of making known especially in words. 2  2 : a meaningful word or saying Grandpa uses old-fashioned expressions. 3  3 : the look on someone's face She had a pleased expression. 4  4 : a way of speaking, singing, or playing that shows mood or feeling She read her lines with expression.
C=Ïd (circumference of a circle) An expression is a group of mathematical symbols representing a number or quantity. Expressions never have equality or inequality signs like =, >, <, â  ,â¥ ,â¤. Some examples. 3a. 3xy + 4x. tÂ² + tÂ³. An identity is an equation that is always true, no matter what values are chosen.