Get it in descending order by writing the term with the
largest exponent first, which is 

Next write the term which has the next largest exponent,
which is  but put a  sign before it.

Next write the term which has the next largest exponent,
which is . 

Finally write the term with the smallest exponent last,
which is 

So in descending order you have:



You can leave the  off the front:



That may be as far as your teacher wanted you to go,
but maybe your teacher wants you to factor out the 
GCF of 

and get



Ask your teacher which way to leave it.

Edwin