If a and b are different positive integers and a + b = a(a + b), then which of the following must be true?
I. a = 1
II. b = 1
III. a = b = 0
Choices.
A) I only  B) II only  C) III only  D) I and II  E) I and III
a has to equal a squared, and that only works if a is 1. both cannot be 0.   I onlynswer : I only
<result>A</result>
If a and b are different positive integers and a + b = a(a + b), then which of the following must be true?
I. a = 1
II. b = 1
III. a = b = 0