Lesson 2
The Arithmetic of Powers
Multiplication by addition, and division by subtraction
Page 76
Your answer :
(b3)(b4) = b7
(102)(102) = 10, 000
(52)(51) = 125
(122)(12) = 123
⎫⎬⎭ This set contains a mistake.
Well, let’s see:
(b3)(b4)
= b(3 + 4) = b7;
(52)(51)
= 5(2 + 1) = 5 × 5 × 5 = 125;
(102)(102)
= 10(2 + 2) = 10 × 10 × 10 × 10 = 10, 000;
(122)(12)
= 12(2 + 1) = 123.
They’re all correct. Return to Page 63 and choose another answer.
