Question

difference between a polynomial and an algebraic expression

Answer 1

polynomial is an algaebric expression with many terms like 
even if there is doubt please let me know:)

Answer 2

i ll only give u example algebric expression :- it can be monomial, bionomial, trionomial or polynomial. ex:- -2m + 15m cube.
but a polynomial is an algebric expression because it contains multiple terms and variables in it. but an algebric expression contains a variable only.
example of polynomial (x raised to the power 7+ 2x raised to the power 4) * 3x.