A = 262 - 242 = (26 - 24)(26 + 24) = 2.50 = 100
B = 272 - 252 = (27 - 25)(27 + 25) = 2.52 = 104
\(A=26^2-24^2\)
\(A=\left(26-24\right)\left(26+24\right)\)
\(A=2.50\)
\(B=27^2-25^2\)
\(B=\left(27-25\right)\left(27+25\right)\)
\(B=2.52\)
\(2.50< 2.52\)
\(< =>A< B\)