### Home > AC > Chapter 3 > Lesson 3.1.2 > Problem 3-15

3-15.

Copy and simplify the following expressions by combining like terms.

Flip subtraction to addition.

Combine like terms.

Remember you cannot combine

and.

Also remember to put the terms in decreasing order of their exponents.

See the hints in part (a).

See the hints in part (a).

Remember

cannot be combined withor.

See the hints in part (a) and part (c).