The absolute value of any rational number a is a () or ().
Positive or 0
Just remember that the absolute value of any number is not negative (the absolute value of a negative number is positive, the absolute value of a positive number is positive, the absolute value of a positive rational number is a, and the absolute value of a positive rational number is -a, for example,|-5|=5,|5|=5,|0|=0,-0=0,|-0|=0)
Using factorization to calculate:2's 100th power—2's 101th power=
2^100-2^101
=2^100-2*2^100
=(1-2)*2^100
=-2^100