Question

9. Which of the following integers cannot be expressed as the difference of two squares?
a. 5
b. 7
c. 8
d. 9
e. 10

Answer 1

Answer:

D ) 9

Step-by-step explanation:

From your  question, I assume that the difference of two squares would be d, since you could do this:

9 = 3 x 3

Hope this helps!