Lesson 2
The Arithmetic of Powers
Multiplication by addition, and division by subtraction
Page 67
Your answer :
(45)/(42) = 64
(6m)/(63) = 6(m − 3)
(43)/(42) = 4
(122)/(12) = 12
⎫⎬⎭ This group contains a mistake.
Let’s check them out:
(45)/(42)
= 4(5 − 2) = 43 = 4 × 4 × 4 = 64;
(43)/(42)
= 4(3 − 2) = 41 = 4;
(6m)/(63)
= 6( exponent of dividend, m minus exponent of divisor, 3) = 6(m − 3);
(122)/(12)
= (122)/(121) = 12(2 − 1) = 121 = 12.
They’re all correct. Return to Page 60 and choose another answer.
