20)
Factor this expression completely.
40x - 80y + 40z

Alicense plate is to consist of 44 digits followed by 55 uppercase letters. determine the number of different license plates possible if the first and second digits must be? odd, and repetition is not permitted.

What is the value of the expression below? (81^2)^1/8

Use set buikder notation to represent the following set: {, -2, -1, 0}