Question

Solve this one plss...​

Answer 1

Answer:

Let D is comprised of the digits A and B, with each of A,B each a single digit integer. Let A be the left-most digit (the "ten's digit of D), and let B be the right-most digit (the "one's" digit of D). (*) For example, if D=54, then D=5⋅10+4, S=(5+4)2=81,S−D=27; and if D=73=7⋅10+3,S=(7+3)2=102=100;S−D=27.