### Home > CCA > Chapter A > Lesson A.1.8 > Problem A-84

A-84.

Simplify each expression below as much as possible. Homework Help ✎

Try using an Expression Mat.

Combine like terms.

Remember to remove unnecessary signs.

(Example:would be )

Follow the steps described in part (a).

Remember you cannot combine variables with different exponent values. (Example: you cannot add

)