Which one of the following is the common factor of (4743 + 4343) and (4747 + 4347) ? Choices.
A) 47-43 B) 47+43 C) (47^43)+(43^47) D) None of these E) (47^2)+(43^2)
When n is odd, (xn + an) is always divisible by (x + a).   Each one of (4743 + 4343) and (4747 + 4347) is divisible by (47 + 43).   Option 47+43
<result>B</result>
Which one of the following is the common factor of (4743 + 4343) and (4747 + 4347) ?