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Lesson 2
The Arithmetic of Powers
Multiplication by addition, and division by subtraction
You added the exponents, apparently, as we did in multiplication.
We stated the rule for division of powers of numbers as
(bm)/(bn) = b(m − n)
and we gave you the problem of dividing b3 by b2. We set the problem up for you:
(b3)/(b2) = ?
Now, all you have to do to solve the problem is to put in the numerical values we gave you for m and n in the relationship used in division and write the answer. (m is the exponent of the dividend; n is the exponent of the divisor.) Figure it out and return to Page 50 and choose the correct answer.
