What is the units digit of the expression 14^7−17^4? Choose the correct choice from the following answers.
A) 0  B) 3  C) 4  D) 8  E) 6
I think answer on this one should be D too. Since we know that 14^7&gt;17^4, as Will said one should always check if the number is positive.
<result>D</result>
What is the units digit of the expression 14^7−17^4?