Answer:
Option 1,2 and 3.
Step-by-step explanation:
An algebraic expression is such a mathematical representation of variables
Algebra is relation with variables a,y,z and so on
So, Option 2 is correct that is it will contain variable in numerator.
Similarly, Option 3 is correct that is it will contain variable in denominator.
Option 4 is incorrect because if it contains variable with an exponent then it will not be algebraic it will become exponent function.
Option 1 is correct because it may have common denominator an algebraic fraction will have common denominator.