Look to the right.
8*3-8* 1=8*2; 8*6-8*3=8*3; 8* 10-8*6=8*4 and so on.
It is exactly eight times that of 65438 +0, 2, 3, etc.
On the left,
5 square -3 square = 2 * 8 = 2 * 4 * 2; 7 square -5 square = 2 *12 = 2 * 4 * 3; Square of 9-square of 7 =2* 16=2*4*4 and so on.
Just 2 times 2, 3, 4, etc.
This rule can be expressed as follows: the left side of the nth formula is 2*4*n more than the previous formula, and the right side is 8 * n; more;
Judging from the results, the proof is obvious. Of course, this law can be strictly proved by mathematical induction.