Simplify each expression below as much as possible. Record your work in the same way you did in problem A‑51.
Flip subtraction to addition.
Remove zero pairs.
Remember to remove unnecessary signs (Example:
would be ).
Follow the steps described in part (a).
Remember a negative multiplied by a negative is a positive.
Remember you cannot add variables with different exponent values. (Example: you cannot add
Follow the steps explained inpart (a) and remember the hints in part (b)