I know you have 1 and 3 right but I'm sorry about not knowing the rest.
Lol you don’t know fhfhdgdgdhehdhewssssdd
Answer:
f(x)=7x'3-2x'2+4x-5
you have to subtract the the exponents by one and multiply by the coefficient
f(x)=21x'2-4x+4
I hope this helps
