( 1)7^2-5^2=8×(3)

(2)9^2-7^2=8×(4)

(3)( 1 1)^2-9^2=8×5

(4) 13^2-( 1 1)^2=8×6

(5) Through observation and induction, try to fill in the blanks: 20132-(2011) 2 = 8× (1006).

Do you want to summarize the process?