Question

can you add 4x and x^2? or are the unlike terms that you cant add

Answer 1

you can add its simple polynomial

Answer 2

would it be 4x^2

Answer 3

they are unlike terms. so you cannot add them.
for adding terms, they should have same power also, not just the same varibale(x)

Answer 4

oh you asked it other way ganesh got it right