Lesson 2
The Arithmetic of Powers
Multiplication by addition, and division by subtraction
Page 82
Now, by the rule for division of two powers of the same base
(bm)/(bn) = b(m − n)
we get
(81)/(80) = 8(1 − 0) = 81.
And 81 isn’t 1, is it? Return to Page 79 and select the right answer.
