Answer:
1.In mathematics, an algebraic expression is an expression built up from integer constants, variables, and the algebraic operations. For example, 3x² − 2xy + c is an algebraic expression
2.In mathematics, an algebraic equation or polynomial equation is an equation of the form P=0 where P is a polynomial with coefficients in some field, often the field of the rational numbers
3.how are expressions used in real life?
-You can use a variable expression to describe a real world situation where one or more quantities have an unknown value or can change in value
how are equations used in real life?
-Almost any situation where there is an unknown quantity can be represented by a linear equation, like figuring out income over time, calculating mileage rates, or predicting profit
